🛠️ 開発・MCP コミュニティ 🔴 エンジニア向け
👤 エンジニア・AI開発者
🛠️ 13DaySprintメソッド
13-Day Sprint Method
マヤ暦の13の音を参考に、プロジェクト管理や自己啓発に役立つ生産性向上システムで、13日間のサイクルでタスクを効率的に進めるSkill。
⚡
⏱ コードレビュー 1時間 → 10分
📺 まず動画で見る(YouTube)
▶ 【衝撃】最強のAIエージェント「Claude Code」の最新機能・使い方・プログラミングをAIで効率化する超実践術を解説! ↗
※ jpskill.com 編集部が参考用に選んだ動画です。動画の内容と Skill の挙動は厳密には一致しないことがあります。
📜 元の英語説明(参考)
Productivity system based on Maya calendar with 13 natural tones for project management and personal development
🇯🇵 日本人クリエイター向け解説
一言でいうと
マヤ暦の13の音を参考に、プロジェクト管理や自己啓発に役立つ生産性向上システムで、13日間のサイクルでタスクを効率的に進めるSkill。
※ jpskill.com 編集部が日本のビジネス現場向けに補足した解説です。Skill本体の挙動とは独立した参考情報です。
⚡ おすすめ: コマンド1行でインストール(60秒)
下記のコマンドをコピーしてターミナル(Mac/Linux)または PowerShell(Windows)に貼り付けてください。 ダウンロード → 解凍 → 配置まで全自動。
🍎 Mac / 🐧 Linux
mkdir -p ~/.claude/skills && cd ~/.claude/skills && curl -L -o 13-day-sprint-method.zip https://jpskill.com/download/4264.zip && unzip -o 13-day-sprint-method.zip && rm 13-day-sprint-method.zip
🪟 Windows (PowerShell)
$d = "$env:USERPROFILE\.claude\skills"; ni -Force -ItemType Directory $d | Out-Null; iwr https://jpskill.com/download/4264.zip -OutFile "$d\13-day-sprint-method.zip"; Expand-Archive "$d\13-day-sprint-method.zip" -DestinationPath $d -Force; ri "$d\13-day-sprint-method.zip"完了後、Claude Code を再起動 → 普通に「動画プロンプト作って」のように話しかけるだけで自動発動します。
💾 手動でダウンロードしたい(コマンドが難しい人向け)
- 1. 下の青いボタンを押して
13-day-sprint-method.zipをダウンロード - 2. ZIPファイルをダブルクリックで解凍 →
13-day-sprint-methodフォルダができる - 3. そのフォルダを
C:\Users\あなたの名前\.claude\skills\(Win)または~/.claude/skills/(Mac)へ移動 - 4. Claude Code を再起動
⚠️ ダウンロード・利用は自己責任でお願いします。当サイトは内容・動作・安全性について責任を負いません。
🎯 このSkillでできること
下記の説明文を読むと、このSkillがあなたに何をしてくれるかが分かります。Claudeにこの分野の依頼をすると、自動で発動します。
📦 インストール方法 (3ステップ)
- 1. 上の「ダウンロード」ボタンを押して .skill ファイルを取得
- 2. ファイル名の拡張子を .skill から .zip に変えて展開(macは自動展開可)
- 3. 展開してできたフォルダを、ホームフォルダの
.claude/skills/に置く- · macOS / Linux:
~/.claude/skills/ - · Windows:
%USERPROFILE%\.claude\skills\
- · macOS / Linux:
Claude Code を再起動すれば完了。「このSkillを使って…」と話しかけなくても、関連する依頼で自動的に呼び出されます。
詳しい使い方ガイドを見る →- 最終更新
- 2026-05-17
- 取得日時
- 2026-05-18
- 同梱ファイル
- 1
💬 こう話しかけるだけ — サンプルプロンプト
- › 13-Day Sprint Method を使って、最小構成のサンプルコードを示して
- › 13-Day Sprint Method の主な使い方と注意点を教えて
- › 13-Day Sprint Method を既存プロジェクトに組み込む方法を教えて
これをClaude Code に貼るだけで、このSkillが自動発動します。
📖 Skill本文(日本語訳)
※ 原文(英語/中国語)を Gemini で日本語化したものです。Claude 自身は原文を読みます。誤訳がある場合は原文をご確認ください。
13日間スプリントメソッド - マヤ暦にインスパイアされた生産性システム
マヤ暦にインスパイアされた自然な生産性システムで、13のトーン（エネルギー）を使って、集中したスプリントを通じて作業を導きます。各13日サイクルは、目標を設定し、行動を起こし、結果を振り返るのに役立ちます。
著者: Michael Galizki
概要
13日間スプリントメソッドは、古代マヤの知恵と現代のアジャイルプロジェクト管理を組み合わせたものです。従来の2週間スプリントの代わりに、このシステムは創造の自然なトーンに合わせた13日サイクルを使用します。毎日が特定の焦点を持ち、燃え尽きることなく行動を導き、勢いを維持します。
なぜ14日ではなく13日なのですか？
特定のタスクに厳密な曜日がないという事実により、繰り返しの物語で「グラウンドホッグデー」のように感じるのを防ぎます。これは、長期間にわたってスプリントを実行する場合に重要です。
主な利点:
- 燃え尽き症候群を防ぐ自然なリズム
- 明確な毎日の焦点領域
- 反省とクリーンアップの時間が組み込まれている
- 行動と休息のバランス
- 個人プロジェクトやチームコラボレーションに最適
13のトーンシステム
各トーンは、スプリントサイクルにおける特定のエネルギーと目的を表します。
トーン1-10：達成フェーズ
| トーン | 名前 | 本質 | 行動 |
|---|---|---|---|
| 1 | Magnetic | 目標 | スプリント全体の目標を定義します。慎重に選び、それに固執する必要があります。 |
| 2 | Lunar | 課題 | 今日直面した疑問や課題を書き留めます。 |
| 3 | Electric | 活性化 | プロジェクトで最初のアクションを起こします。素晴らしい第一歩を踏み出すエネルギーを感じてください。 |
| 4 | Self-Existing | 計画 | 最終計画とタスクを確定します。書き留めます。自由に調整してください。 |
| 5 | Overtone | 牽引力 | 作業が進んでいます。最初の結果を他の人に見せます。 |
| 6 | Rhythmic | バランス | スプリントタスクと他のタスクのバランスを取ります。家族や他の約束のために時間を取ります。 |
| 7 | Resonant | 同期 | パートナーやチームと連携します。協力します。電話や会議に最適な時間です。 |
| 8 | Galactic | 集中 | 行動しながらも、元の意図に忠実であり続けます。進捗を維持します。 |
| 9 | Solar | 意図 | 行動する意図を設定します。準備を完了します。なぜその目標を選んだのかを思い出してください。 |
| 10 | Planetary | 行動 | 行動し、スプリントの結果を全員が利用できるようにします。公開します。見えるようにします。 |
トーン11-13：反省フェーズ
| トーン | 名前 | 本質 | 行動 |
|---|---|---|---|
| 11 | Spectral | クリーンアップ | スペースと心をクリアにします。不要なものを取り除きます。 |
| 12 | Crystal | 結果 | このスプリントで達成した結果を書き留めます。何を誇りに思いますか？ |
| 13 | Cosmic | 反省 | 学んだことを書き留めます。今日は新しいタスクはありません。新しいサイクルの前に最後の休息を取ります。 |
このシステムの使い方
個人向け
- スプリント開始（トーン1）： 13日間で達成したい主要な目標を1つ定義します。
- 毎日の実践： 今日のトーンを確認し、そのガイダンスに従います。
- スプリント終了（トーン11-13）： 次のサイクルを開始する前に、クリーンアップ、結果の文書化、反省を行います。
チーム向け
- スプリント計画（トーン1）： チームでスプリント目標を一緒に定義します。
- デイリースタンドアップ： 現在のトーンを参照して議論を導きます。
- トーン7（同期）： チームの連携とコラボレーション会議に最適な日です。
- トーン10（行動）： リリース/デモの日です。
- スプリントレトロスペクティブ（トーン13）： チームで学んだことを反省します。
スプリント例
スプリント目標（トーン1）： 新しいウェブサイト機能をローンチする
- トーン2： チームはタイムラインに関する懸念を議論します。
- トーン3： 機能のコーディングを開始します。
- トーン4： 技術設計とタスク分解を確定します。
- トーン5： 最初の動作プロトタイプを披露します。
- トーン6： 機能作業とバグ修正のバランスを取ります。
- トーン7： デザインチームとステークホルダーと同期します。
- トーン8： コア機能の完成に集中します。
- トーン9： デプロイとドキュメントを準備します。
- トーン10： 本番環境にデプロイし、ユーザーに発表します。
- トーン11： コードをクリーンアップし、一時ファイルを削除します。
- トーン12： 完了したことを文書化します。
- トーン13： チームはうまくいったこととうまくいかなかったことを反省します。
システムの背後にある心理学
多くの人がマヤ暦に神秘主義を見出しますが、このシステムは心理学に深く根ざしています。
- 目標設定（トーン1）： 明確な意図設定は、脳の目標達成メカニズムを活性化します。
- 疑念の処理（トーン2）： 課題を認識することは、それらを克服するのに役立ちます。
- 行動（トーン3-10）： 明確な毎日の焦点による持続的な勢い。
- 公開リリース（トーン10）： 完璧主義を防ぐコミットメントデバイス。
- クリーンアップ（トーン11）： 精神的および物理的な空間の整理は集中力を向上させます。
- 文書化（トーン12）： 学習を強化し、モチベーションを提供します。
- 反省（トーン13）： メタ認知は将来のパフォーマンスを向上させます。
2026年完全カレンダー
カレンダーの理解
- 2026年は1月1日にトーン10（Planetary）で始まります。
- 各スプリントは正確に13日間です。
- 2026年には28の完全なスプリントがあります（364日）。
- サイクルは年間を通して継続的に繰り返されます。
現在のトーンを見つける方法
- 下の表で今日の日付を見つけます。
- 「トーン」列で、現在アクティブなトーン番号を確認します。
- 上記の「13のトーンシステム」表でそのトーン番号を調べて、完全な説明を確認します。
2026年1月
| 日付 | 曜日 | スプリント | トーン |
|---|---|---|---|
| 2026-01-01 | 木 | 1 | 10 |
| 2026-01-02 | 金 | 1 | 11 |
| 2026-01-03 | 土 | 1 | 12 |
| 2026-01-04 | 日 | 1 | 13 |
| 2026-01-05 | 月 | 1 | 1 |
| 2026-01-06 | 火 | 1 | 2 |
| 2026-01-07 | 水 | 1 | 3 |
| 2026-01-08 | 木 | 1 | 4 |
| 2026-01-09 | 金 | 1 | 5 |
| 2026-01-10 | 土 | 1 | 6 |
| 2026-01-11 | 日 | 1 | 7 |
| 2026-01-12 | 月 | 1 | 8 |
| 2026-01-13 | 火 | 1 | 9 |
| 2026-01-14 | 水 | 2 | 10 |
| 2026-01-15 | 木 | 2 | 11 |
| 2026-01-16 | 金 | 2 | 12 |
| 2026-01-17 | 土 | 2 | 13 |
| 2026-01-18 | 日 | 2 | 1 |
| 2026-01-19 | 月 | 2 | 2 |
| 2026-01-20 | 火 | 2 | 3 |
| 2026-01-21 | 水 | 2 | 4 |
| 2026-01-22 | 木 | 2 | 5 |
| 2026-01-23 | 金 | 2 | 6 |
| 2026-01- |
📜 原文 SKILL.md(Claudeが読む英語/中国語)を展開
13-Day Sprint Method - Productivity System Inspired by Maya Calendar
A natural productivity system inspired by the Maya calendar that uses 13 tones (energies) to guide your work through focused sprints. Each 13-day cycle helps you set goals, take action, and reflect on results.
Author: Michael Galizki
Overview
The 13-Day Sprint Method combines ancient Maya wisdom with modern agile project management. Instead of traditional 2-week sprints, this system uses 13-day cycles aligned with natural tones of creation. Each day has a specific focus that guides your actions and maintains momentum without burnout.
Why 13 days instead of 14?
The fact that you don't have a strict day of the week for an exact task prevents you from feeling like Groundhog Day with a repeating story. This is important when you're running sprints over a long distance.
Key Benefits:
- Natural rhythm that prevents burnout
- Clear daily focus areas
- Built-in reflection and cleanup time
- Balance between action and rest
- Perfect for solo projects and team collaboration
The 13 Tones System
Each tone represents a specific energy and purpose in your sprint cycle:
Tones 1-10: Achievement Phase
| Tone | Name | Essence | Action |
|---|---|---|---|
| 1 | Magnetic | Goal | Define the goal for the entire sprint. Choose carefully, you'll need to stick with it. |
| 2 | Lunar | Challenge | Write down the doubt or challenge you faced today. |
| 3 | Electric | Activation | Take the first action on the project. Feel the energy to make great first steps. |
| 4 | Self-Existing | Plan | Lock in the final plan and tasks. Write it down. Feel free to adjust. |
| 5 | Overtone | Traction | The work is progressing, show the first results to others. |
| 6 | Rhythmic | Balance | Balance between sprint tasks and others. Take time for family and other commitments. |
| 7 | Resonant | Sync | Align with partners and the team. Collaborate. Great time for calls and meetings. |
| 8 | Galactic | Focus | Stay true to your original intent while acting. Maintain progress. |
| 9 | Solar | Intention | Set the intention to act. Finalize preparation. Remember why you chose your goal. |
| 10 | Planetary | Action | Act, make sprint results available to everyone. Release publicly. Make it visible. |
Tones 11-13: Reflection Phase
| Tone | Name | Essence | Action |
|---|---|---|---|
| 11 | Spectral | Cleanup | Clear space and mind. Remove what's unnecessary. |
| 12 | Crystal | Results | Write down the results achieved in this sprint. What are you proud of? |
| 13 | Cosmic | Reflection | Write down what you learned. No new tasks today. Take final rest before new cycle. |
How to Use This System
For Individuals
- Start of Sprint (Tone 1): Define one main goal you want to achieve in 13 days
- Daily Practice: Check today's tone and follow its guidance
- End of Sprint (Tones 11-13): Clean up, document results, and reflect before starting the next cycle
For Teams
- Sprint Planning (Tone 1): Team defines the sprint goal together
- Daily Stand-ups: Reference current tone to guide discussion
- Tone 7 (Sync): Perfect day for team alignment and collaboration meetings
- Tone 10 (Action): Release/demo day
- Sprint Retrospective (Tone 13): Team reflection on what was learned
Example Sprint
Sprint Goal (Tone 1): Launch new website feature
- Tone 2: Team discusses concerns about timeline
- Tone 3: Start coding the feature
- Tone 4: Finalize technical design and task breakdown
- Tone 5: Show first working prototype
- Tone 6: Balance feature work with bug fixes
- Tone 7: Sync with design team and stakeholders
- Tone 8: Focus on completing core functionality
- Tone 9: Prepare deployment and documentation
- Tone 10: Deploy to production, announce to users
- Tone 11: Clean up code, remove temporary files
- Tone 12: Document what was completed
- Tone 13: Team reflects on what worked and what didn't
Psychology Behind the System
While many people see mysticism in the Maya calendar, this system is deeply rooted in psychology:
- Goal Setting (Tone 1): Clear intention setting activates the brain's goal-achievement mechanisms
- Doubt Processing (Tone 2): Acknowledging challenges helps overcome them
- Action (Tones 3-10): Sustained momentum with clear daily focus
- Public Release (Tone 10): Commitment device that prevents perfectionism
- Cleanup (Tone 11): Mental and physical space clearing improves focus
- Documentation (Tone 12): Reinforces learning and provides motivation
- Reflection (Tone 13): Metacognition improves future performance
2026 Full Calendar
Understanding the Calendar
- Year 2026 starts on January 1st with Tone 10 (Planetary)
- Each sprint is exactly 13 days
- There are 28 complete sprints in 2026 (364 days)
- The cycle repeats continuously throughout the year
How to Find Your Current Tone
- Find today's date in the table below
- Check the "Tone" column to see which tone number is active
- Look up that tone number in the "13 Tones System" table above for full description
January 2026
| Date | Day | Sprint | Tone |
|---|---|---|---|
| 2026-01-01 | Thu | 1 | 10 |
| 2026-01-02 | Fri | 1 | 11 |
| 2026-01-03 | Sat | 1 | 12 |
| 2026-01-04 | Sun | 1 | 13 |
| 2026-01-05 | Mon | 1 | 1 |
| 2026-01-06 | Tue | 1 | 2 |
| 2026-01-07 | Wed | 1 | 3 |
| 2026-01-08 | Thu | 1 | 4 |
| 2026-01-09 | Fri | 1 | 5 |
| 2026-01-10 | Sat | 1 | 6 |
| 2026-01-11 | Sun | 1 | 7 |
| 2026-01-12 | Mon | 1 | 8 |
| 2026-01-13 | Tue | 1 | 9 |
| 2026-01-14 | Wed | 2 | 10 |
| 2026-01-15 | Thu | 2 | 11 |
| 2026-01-16 | Fri | 2 | 12 |
| 2026-01-17 | Sat | 2 | 13 |
| 2026-01-18 | Sun | 2 | 1 |
| 2026-01-19 | Mon | 2 | 2 |
| 2026-01-20 | Tue | 2 | 3 |
| 2026-01-21 | Wed | 2 | 4 |
| 2026-01-22 | Thu | 2 | 5 |
| 2026-01-23 | Fri | 2 | 6 |
| 2026-01-24 | Sat | 2 | 7 |
| 2026-01-25 | Sun | 2 | 8 |
| 2026-01-26 | Mon | 2 | 9 |
| 2026-01-27 | Tue | 3 | 10 |
| 2026-01-28 | Wed | 3 | 11 |
| 2026-01-29 | Thu | 3 | 12 |
| 2026-01-30 | Fri | 3 | 13 |
| 2026-01-31 | Sat | 3 | 1 |
February 2026
| Date | Day | Sprint | Tone |
|---|---|---|---|
| 2026-02-01 | Sun | 3 | 2 |
| 2026-02-02 | Mon | 3 | 3 |
| 2026-02-03 | Tue | 3 | 4 |
| 2026-02-04 | Wed | 3 | 5 |
| 2026-02-05 | Thu | 3 | 6 |
| 2026-02-06 | Fri | 3 | 7 |
| 2026-02-07 | Sat | 3 | 8 |
| 2026-02-08 | Sun | 3 | 9 |
| 2026-02-09 | Mon | 4 | 10 |
| 2026-02-10 | Tue | 4 | 11 |
| 2026-02-11 | Wed | 4 | 12 |
| 2026-02-12 | Thu | 4 | 13 |
| 2026-02-13 | Fri | 4 | 1 |
| 2026-02-14 | Sat | 4 | 2 |
| 2026-02-15 | Sun | 4 | 3 |
| 2026-02-16 | Mon | 4 | 4 |
| 2026-02-17 | Tue | 4 | 5 |
| 2026-02-18 | Wed | 4 | 6 |
| 2026-02-19 | Thu | 4 | 7 |
| 2026-02-20 | Fri | 4 | 8 |
| 2026-02-21 | Sat | 4 | 9 |
| 2026-02-22 | Sun | 5 | 10 |
| 2026-02-23 | Mon | 5 | 11 |
| 2026-02-24 | Tue | 5 | 12 |
| 2026-02-25 | Wed | 5 | 13 |
| 2026-02-26 | Thu | 5 | 1 |
| 2026-02-27 | Fri | 5 | 2 |
| 2026-02-28 | Sat | 5 | 3 |
March 2026
| Date | Day | Sprint | Tone |
|---|---|---|---|
| 2026-03-01 | Sun | 5 | 4 |
| 2026-03-02 | Mon | 5 | 5 |
| 2026-03-03 | Tue | 5 | 6 |
| 2026-03-04 | Wed | 5 | 7 |
| 2026-03-05 | Thu | 5 | 8 |
| 2026-03-06 | Fri | 5 | 9 |
| 2026-03-07 | Sat | 6 | 10 |
| 2026-03-08 | Sun | 6 | 11 |
| 2026-03-09 | Mon | 6 | 12 |
| 2026-03-10 | Tue | 6 | 13 |
| 2026-03-11 | Wed | 6 | 1 |
| 2026-03-12 | Thu | 6 | 2 |
| 2026-03-13 | Fri | 6 | 3 |
| 2026-03-14 | Sat | 6 | 4 |
| 2026-03-15 | Sun | 6 | 5 |
| 2026-03-16 | Mon | 6 | 6 |
| 2026-03-17 | Tue | 6 | 7 |
| 2026-03-18 | Wed | 6 | 8 |
| 2026-03-19 | Thu | 6 | 9 |
| 2026-03-20 | Fri | 7 | 10 |
| 2026-03-21 | Sat | 7 | 11 |
| 2026-03-22 | Sun | 7 | 12 |
| 2026-03-23 | Mon | 7 | 13 |
| 2026-03-24 | Tue | 7 | 1 |
| 2026-03-25 | Wed | 7 | 2 |
| 2026-03-26 | Thu | 7 | 3 |
| 2026-03-27 | Fri | 7 | 4 |
| 2026-03-28 | Sat | 7 | 5 |
| 2026-03-29 | Sun | 7 | 6 |
| 2026-03-30 | Mon | 7 | 7 |
| 2026-03-31 | Tue | 7 | 8 |
April 2026
| Date | Day | Sprint | Tone |
|---|---|---|---|
| 2026-04-01 | Wed | 7 | 9 |
| 2026-04-02 | Thu | 8 | 10 |
| 2026-04-03 | Fri | 8 | 11 |
| 2026-04-04 | Sat | 8 | 12 |
| 2026-04-05 | Sun | 8 | 13 |
| 2026-04-06 | Mon | 8 | 1 |
| 2026-04-07 | Tue | 8 | 2 |
| 2026-04-08 | Wed | 8 | 3 |
| 2026-04-09 | Thu | 8 | 4 |
| 2026-04-10 | Fri | 8 | 5 |
| 2026-04-11 | Sat | 8 | 6 |
| 2026-04-12 | Sun | 8 | 7 |
| 2026-04-13 | Mon | 8 | 8 |
| 2026-04-14 | Tue | 8 | 9 |
| 2026-04-15 | Wed | 9 | 10 |
| 2026-04-16 | Thu | 9 | 11 |
| 2026-04-17 | Fri | 9 | 12 |
| 2026-04-18 | Sat | 9 | 13 |
| 2026-04-19 | Sun | 9 | 1 |
| 2026-04-20 | Mon | 9 | 2 |
| 2026-04-21 | Tue | 9 | 3 |
| 2026-04-22 | Wed | 9 | 4 |
| 2026-04-23 | Thu | 9 | 5 |
| 2026-04-24 | Fri | 9 | 6 |
| 2026-04-25 | Sat | 9 | 7 |
| 2026-04-26 | Sun | 9 | 8 |
| 2026-04-27 | Mon | 9 | 9 |
| 2026-04-28 | Tue | 10 | 10 |
| 2026-04-29 | Wed | 10 | 11 |
| 2026-04-30 | Thu | 10 | 12 |
May 2026
| Date | Day | Sprint | Tone |
|---|---|---|---|
| 2026-05-01 | Fri | 10 | 13 |
| 2026-05-02 | Sat | 10 | 1 |
| 2026-05-03 | Sun | 10 | 2 |
| 2026-05-04 | Mon | 10 | 3 |
| 2026-05-05 | Tue | 10 | 4 |
| 2026-05-06 | Wed | 10 | 5 |
| 2026-05-07 | Thu | 10 | 6 |
| 2026-05-08 | Fri | 10 | 7 |
| 2026-05-09 | Sat | 10 | 8 |
| 2026-05-10 | Sun | 10 | 9 |
| 2026-05-11 | Mon | 11 | 10 |
| 2026-05-12 | Tue | 11 | 11 |
| 2026-05-13 | Wed | 11 | 12 |
| 2026-05-14 | Thu | 11 | 13 |
| 2026-05-15 | Fri | 11 | 1 |
| 2026-05-16 | Sat | 11 | 2 |
| 2026-05-17 | Sun | 11 | 3 |
| 2026-05-18 | Mon | 11 | 4 |
| 2026-05-19 | Tue | 11 | 5 |
| 2026-05-20 | Wed | 11 | 6 |
| 2026-05-21 | Thu | 11 | 7 |
| 2026-05-22 | Fri | 11 | 8 |
| 2026-05-23 | Sat | 11 | 9 |
| 2026-05-24 | Sun | 12 | 10 |
| 2026-05-25 | Mon | 12 | 11 |
| 2026-05-26 | Tue | 12 | 12 |
| 2026-05-27 | Wed | 12 | 13 |
| 2026-05-28 | Thu | 12 | 1 |
| 2026-05-29 | Fri | 12 | 2 |
| 2026-05-30 | Sat | 12 | 3 |
| 2026-05-31 | Sun | 12 | 4 |
June 2026
| Date | Day | Sprint | Tone |
|---|---|---|---|
| 2026-06-01 | Mon | 12 | 5 |
| 2026-06-02 | Tue | 12 | 6 |
| 2026-06-03 | Wed | 12 | 7 |
| 2026-06-04 | Thu | 12 | 8 |
| 2026-06-05 | Fri | 12 | 9 |
| 2026-06-06 | Sat | 13 | 10 |
| 2026-06-07 | Sun | 13 | 11 |
| 2026-06-08 | Mon | 13 | 12 |
| 2026-06-09 | Tue | 13 | 13 |
| 2026-06-10 | Wed | 13 | 1 |
| 2026-06-11 | Thu | 13 | 2 |
| 2026-06-12 | Fri | 13 | 3 |
| 2026-06-13 | Sat | 13 | 4 |
| 2026-06-14 | Sun | 13 | 5 |
| 2026-06-15 | Mon | 13 | 6 |
| 2026-06-16 | Tue | 13 | 7 |
| 2026-06-17 | Wed | 13 | 8 |
| 2026-06-18 | Thu | 13 | 9 |
| 2026-06-19 | Fri | 14 | 10 |
| 2026-06-20 | Sat | 14 | 11 |
| 2026-06-21 | Sun | 14 | 12 |
| 2026-06-22 | Mon | 14 | 13 |
| 2026-06-23 | Tue | 14 | 1 |
| 2026-06-24 | Wed | 14 | 2 |
| 2026-06-25 | Thu | 14 | 3 |
| 2026-06-26 | Fri | 14 | 4 |
| 2026-06-27 | Sat | 14 | 5 |
| 2026-06-28 | Sun | 14 | 6 |
| 2026-06-29 | Mon | 14 | 7 |
| 2026-06-30 | Tue | 14 | 8 |
July 2026
| Date | Day | Sprint | Tone |
|---|---|---|---|
| 2026-07-01 | Wed | 14 | 9 |
| 2026-07-02 | Thu | 15 | 10 |
| 2026-07-03 | Fri | 15 | 11 |
| 2026-07-04 | Sat | 15 | 12 |
| 2026-07-05 | Sun | 15 | 13 |
| 2026-07-06 | Mon | 15 | 1 |
| 2026-07-07 | Tue | 15 | 2 |
| 2026-07-08 | Wed | 15 | 3 |
| 2026-07-09 | Thu | 15 | 4 |
| 2026-07-10 | Fri | 15 | 5 |
| 2026-07-11 | Sat | 15 | 6 |
| 2026-07-12 | Sun | 15 | 7 |
| 2026-07-13 | Mon | 15 | 8 |
| 2026-07-14 | Tue | 15 | 9 |
| 2026-07-15 | Wed | 16 | 10 |
| 2026-07-16 | Thu | 16 | 11 |
| 2026-07-17 | Fri | 16 | 12 |
| 2026-07-18 | Sat | 16 | 13 |
| 2026-07-19 | Sun | 16 | 1 |
| 2026-07-20 | Mon | 16 | 2 |
| 2026-07-21 | Tue | 16 | 3 |
| 2026-07-22 | Wed | 16 | 4 |
| 2026-07-23 | Thu | 16 | 5 |
| 2026-07-24 | Fri | 16 | 6 |
| 2026-07-25 | Sat | 16 | 7 |
| 2026-07-26 | Sun | 16 | 8 |
| 2026-07-27 | Mon | 16 | 9 |
| 2026-07-28 | Tue | 17 | 10 |
| 2026-07-29 | Wed | 17 | 11 |
| 2026-07-30 | Thu | 17 | 12 |
| 2026-07-31 | Fri | 17 | 13 |
August 2026
| Date | Day | Sprint | Tone |
|---|---|---|---|
| 2026-08-01 | Sat | 17 | 1 |
| 2026-08-02 | Sun | 17 | 2 |
| 2026-08-03 | Mon | 17 | 3 |
| 2026-08-04 | Tue | 17 | 4 |
| 2026-08-05 | Wed | 17 | 5 |
| 2026-08-06 | Thu | 17 | 6 |
| 2026-08-07 | Fri | 17 | 7 |
| 2026-08-08 | Sat | 17 | 8 |
| 2026-08-09 | Sun | 17 | 9 |
| 2026-08-10 | Mon | 18 | 10 |
| 2026-08-11 | Tue | 18 | 11 |
| 2026-08-12 | Wed | 18 | 12 |
| 2026-08-13 | Thu | 18 | 13 |
| 2026-08-14 | Fri | 18 | 1 |
| 2026-08-15 | Sat | 18 | 2 |
| 2026-08-16 | Sun | 18 | 3 |
| 2026-08-17 | Mon | 18 | 4 |
| 2026-08-18 | Tue | 18 | 5 |
| 2026-08-19 | Wed | 18 | 6 |
| 2026-08-20 | Thu | 18 | 7 |
| 2026-08-21 | Fri | 18 | 8 |
| 2026-08-22 | Sat | 18 | 9 |
| 2026-08-23 | Sun | 19 | 10 |
| 2026-08-24 | Mon | 19 | 11 |
| 2026-08-25 | Tue | 19 | 12 |
| 2026-08-26 | Wed | 19 | 13 |
| 2026-08-27 | Thu | 19 | 1 |
| 2026-08-28 | Fri | 19 | 2 |
| 2026-08-29 | Sat | 19 | 3 |
| 2026-08-30 | Sun | 19 | 4 |
| 2026-08-31 | Mon | 19 | 5 |
September 2026
| Date | Day | Sprint | Tone |
|---|---|---|---|
| 2026-09-01 | Tue | 19 | 6 |
| 2026-09-02 | Wed | 19 | 7 |
| 2026-09-03 | Thu | 19 | 8 |
| 2026-09-04 | Fri | 19 | 9 |
| 2026-09-05 | Sat | 20 | 10 |
| 2026-09-06 | Sun | 20 | 11 |
| 2026-09-07 | Mon | 20 | 12 |
| 2026-09-08 | Tue | 20 | 13 |
| 2026-09-09 | Wed | 20 | 1 |
| 2026-09-10 | Thu | 20 | 2 |
| 2026-09-11 | Fri | 20 | 3 |
| 2026-09-12 | Sat | 20 | 4 |
| 2026-09-13 | Sun | 20 | 5 |
| 2026-09-14 | Mon | 20 | 6 |
| 2026-09-15 | Tue | 20 | 7 |
| 2026-09-16 | Wed | 20 | 8 |
| 2026-09-17 | Thu | 20 | 9 |
| 2026-09-18 | Fri | 21 | 10 |
| 2026-09-19 | Sat | 21 | 11 |
| 2026-09-20 | Sun | 21 | 12 |
| 2026-09-21 | Mon | 21 | 13 |
| 2026-09-22 | Tue | 21 | 1 |
| 2026-09-23 | Wed | 21 | 2 |
| 2026-09-24 | Thu | 21 | 3 |
| 2026-09-25 | Fri | 21 | 4 |
| 2026-09-26 | Sat | 21 | 5 |
| 2026-09-27 | Sun | 21 | 6 |
| 2026-09-28 | Mon | 21 | 7 |
| 2026-09-29 | Tue | 21 | 8 |
| 2026-09-30 | Wed | 21 | 9 |
October 2026
| Date | Day | Sprint | Tone |
|---|---|---|---|
| 2026-10-01 | Thu | 22 | 10 |
| 2026-10-02 | Fri | 22 | 11 |
| 2026-10-03 | Sat | 22 | 12 |
| 2026-10-04 | Sun | 22 | 13 |
| 2026-10-05 | Mon | 22 | 1 |
| 2026-10-06 | Tue | 22 | 2 |
| 2026-10-07 | Wed | 22 | 3 |
| 2026-10-08 | Thu | 22 | 4 |
| 2026-10-09 | Fri | 22 | 5 |
| 2026-10-10 | Sat | 22 | 6 |
| 2026-10-11 | Sun | 22 | 7 |
| 2026-10-12 | Mon | 22 | 8 |
| 2026-10-13 | Tue | 22 | 9 |
| 2026-10-14 | Wed | 23 | 10 |
| 2026-10-15 | Thu | 23 | 11 |
| 2026-10-16 | Fri | 23 | 12 |
| 2026-10-17 | Sat | 23 | 13 |
| 2026-10-18 | Sun | 23 | 1 |
| 2026-10-19 | Mon | 23 | 2 |
| 2026-10-20 | Tue | 23 | 3 |
| 2026-10-21 | Wed | 23 | 4 |
| 2026-10-22 | Thu | 23 | 5 |
| 2026-10-23 | Fri | 23 | 6 |
| 2026-10-24 | Sat | 23 | 7 |
| 2026-10-25 | Sun | 23 | 8 |
| 2026-10-26 | Mon | 23 | 9 |
| 2026-10-27 | Tue | 24 | 10 |
| 2026-10-28 | Wed | 24 | 11 |
| 2026-10-29 | Thu | 24 | 12 |
| 2026-10-30 | Fri | 24 | 13 |
| 2026-10-31 | Sat | 24 | 1 |
November 2026
| Date | Day | Sprint | Tone |
|---|---|---|---|
| 2026-11-01 | Sun | 24 | 2 |
| 2026-11-02 | Mon | 24 | 3 |
| 2026-11-03 | Tue | 24 | 4 |
| 2026-11-04 | Wed | 24 | 5 |
| 2026-11-05 | Thu | 24 | 6 |
| 2026-11-06 | Fri | 24 | 7 |
| 2026-11-07 | Sat | 24 | 8 |
| 2026-11-08 | Sun | 24 | 9 |
| 2026-11-09 | Mon | 25 | 10 |
| 2026-11-10 | Tue | 25 | 11 |
| 2026-11-11 | Wed | 25 | 12 |
| 2026-11-12 | Thu | 25 | 13 |
| 2026-11-13 | Fri | 25 | 1 |
| 2026-11-14 | Sat | 25 | 2 |
| 2026-11-15 | Sun | 25 | 3 |
| 2026-11-16 | Mon | 25 | 4 |
| 2026-11-17 | Tue | 25 | 5 |
| 2026-11-18 | Wed | 25 | 6 |
| 2026-11-19 | Thu | 25 | 7 |
| 2026-11-20 | Fri | 25 | 8 |
| 2026-11-21 | Sat | 25 | 9 |
| 2026-11-22 | Sun | 26 | 10 |
| 2026-11-23 | Mon | 26 | 11 |
| 2026-11-24 | Tue | 26 | 12 |
| 2026-11-25 | Wed | 26 | 13 |
| 2026-11-26 | Thu | 26 | 1 |
| 2026-11-27 | Fri | 26 | 2 |
| 2026-11-28 | Sat | 26 | 3 |
| 2026-11-29 | Sun | 26 | 4 |
| 2026-11-30 | Mon | 26 | 5 |
December 2026
| Date | Day | Sprint | Tone |
|---|---|---|---|
| 2026-12-01 | Tue | 26 | 6 |
| 2026-12-02 | Wed | 26 | 7 |
| 2026-12-03 | Thu | 26 | 8 |
| 2026-12-04 | Fri | 26 | 9 |
| 2026-12-05 | Sat | 27 | 10 |
| 2026-12-06 | Sun | 27 | 11 |
| 2026-12-07 | Mon | 27 | 12 |
| 2026-12-08 | Tue | 27 | 13 |
| 2026-12-09 | Wed | 27 | 1 |
| 2026-12-10 | Thu | 27 | 2 |
| 2026-12-11 | Fri | 27 | 3 |
| 2026-12-12 | Sat | 27 | 4 |
| 2026-12-13 | Sun | 27 | 5 |
| 2026-12-14 | Mon | 27 | 6 |
| 2026-12-15 | Tue | 27 | 7 |
| 2026-12-16 | Wed | 27 | 8 |
| 2026-12-17 | Thu | 27 | 9 |
| 2026-12-18 | Fri | 28 | 10 |
| 2026-12-19 | Sat | 28 | 11 |
| 2026-12-20 | Sun | 28 | 12 |
| 2026-12-21 | Mon | 28 | 13 |
| 2026-12-22 | Tue | 28 | 1 |
| 2026-12-23 | Wed | 28 | 2 |
| 2026-12-24 | Thu | 28 | 3 |
| 2026-12-25 | Fri | 28 | 4 |
| 2026-12-26 | Sat | 28 | 5 |
| 2026-12-27 | Sun | 28 | 6 |
| 2026-12-28 | Mon | 28 | 7 |
| 2026-12-29 | Tue | 28 | 8 |
| 2026-12-30 | Wed | 28 | 9 |
Instructions for AI Assistant
When a user asks about the 13-Day Sprint Method or wants guidance on their current day:
Step 1: Determine Current Date and Tone
- Get today's date
- Look it up in the 2026 calendar table above
- Identify: Sprint number, Tone number, Tone name, Essence, and Action
Step 2: Provide Daily Guidance
Tell the user:
"Today is [Date] - [Tone Name] (Tone [Number])
Focus: [Essence]
Action: [Action from table]
[Add 2-3 sentences of interpretation based on the tone's meaning]"
Step 3: Context-Aware Advice
Depending on the tone, provide specific guidance:
- Tone 1 (Magnetic): Help user define a clear, achievable goal for the 13-day sprint
- Tone 2 (Lunar): Encourage acknowledging doubts without judgment
- Tone 3 (Electric): Motivate taking immediate action, even small steps
- Tone 4 (Self-Existing): Help structure and document the plan
- Tone 5 (Overtone): Encourage sharing progress with others
- Tone 6 (Rhythmic): Remind about work-life balance
- Tone 7 (Resonant): Suggest scheduling collaboration time
- Tone 8 (Galactic): Help user reconnect with original goal
- Tone 9 (Solar): Support in finalizing preparations
- Tone 10 (Planetary): Encourage public release, even if imperfect
- Tone 11 (Spectral): Suggest cleanup tasks (files, workspace, mind)
- Tone 12 (Crystal): Help document achievements
- Tone 13 (Cosmic): Facilitate reflection without new commitments
Step 4: Sprint Context
If the user is at the beginning of a sprint (Tones 1-4), ask about their goal.
If in the middle (Tones 5-9), check on progress.
If at the end (Tones 10-13), focus on completion and reflection.
Step 5: Answer Questions
Be prepared to answer:
- "What tone is today?"
- "When does the next sprint start?"
- "What should I focus on today?"
- "How does this system work?"
- "What tone will [future date] be?"
Example Prompts & Use Cases
Use Case 1: Daily Check-in
User: "What's my focus for today?"
AI: "Today is February 3, 2026 - Self-Existing (Tone 4)
Focus: Plan
Action: Lock in the final plan and tasks
This is the perfect day to take all those ideas you've been thinking about and write them down. Create your task list, set milestones, and structure your approach. You've already defined your goal (Tone 1) and acknowledged your doubts (Tone 2), and taken first action (Tone 3). Now it's time to solidify the plan. Don't worry about making it perfect - you can adjust as you go. The key is to document what you're committing to for this sprint."Use Case 2: Sprint Planning
User: "I want to start a new 13-day sprint. How do I begin?"
AI: "Great! Let me check today's tone... Today is Tone 4 (Plan), which means you're actually in the middle of Sprint 3. Your current sprint will end on February 8.
The next sprint (Sprint 4) begins on February 9 with Tone 10 (Action). However, the ideal day to set a new goal is February 13 (Tone 1 - Magnetic).
I recommend:
- Complete your current sprint
- Use February 13 as your goal-setting day
- The sprint will run through February 21
What goal are you considering for your next sprint?"Use Case 3: Mid-Sprint Support
User: "I'm feeling stuck on my project"
AI: "Let me check where you are in the cycle... Today is Tone 7 (Resonant) - Sync day.
This is actually perfect timing! Tone 7 is all about collaboration and alignment. Your feeling of being stuck might be a signal that it's time to:
1. Reach out to someone for input
2. Schedule a call with your team or accountability partner
3. Share what you've done so far and get feedback
4. Align with stakeholders
You don't have to solve everything alone today. Who could you connect with about your project?"Best Practices
For Personal Projects
✅ Do:
- Set realistic 13-day goals (not 3-month projects)
- Write down your goal on Tone 1
- Actually release something on Tone 10 (even if imperfect)
- Take reflection days seriously (Tones 11-13)
- Use the calendar daily as a guide
❌ Don't:
- Skip tones or rush ahead
- Start new goals on Tone 13
- Ignore the reflection phase
- Set overly ambitious goals
For Teams
✅ Do:
- Align sprint starts with Tone 1 (Magnetic)
- Schedule demos for Tone 10 (Planetary)
- Hold retrospectives on Tone 13 (Cosmic)
- Reference tones in daily standups
- Use Tone 7 for stakeholder meetings
❌ Don't:
- Force everyone to be mystical about it
- Make it overly complicated
- Skip the cleanup phase
- Ignore team members' other rhythms
Integration with Other Systems
This system works alongside:
- Scrum: Use 13-day sprints instead of 2-week sprints
- GTD: The 13 tones provide context for your daily actions
- Bullet Journal: Add tone numbers to your daily pages
- OKRs: Use sprints to make progress on quarterly objectives
Frequently Asked Questions
Q: Do I have to believe in Maya spirituality to use this?
A: No! While inspired by Maya wisdom, this is a practical productivity system based on psychological principles of goal-setting, momentum, and reflection.
Q: What if I can't start on Tone 1?
A: Start wherever you are in the cycle. You'll naturally sync up within a few days. The next Tone 1 is your opportunity to set a fresh goal.
Q: Can I run multiple sprints for different projects?
A: It's possible, but not recommended. The power comes from focus. If you must, ensure each project has its own tracking and doesn't share the same tone-based attention.
Q: What if I miss a day?
A: Just continue from where you are. The cycle continues regardless. You can catch up by reading what the tone was for the days you missed.
Q: Is this better than regular 2-week sprints?
A: "Better" depends on context. Many find the 13-day cycle prevents the "Groundhog Day" feeling of weekly patterns while still being manageable. Try it for 2-3 cycles and decide.
Resources
- Book: "13-Day Sprint Method" by Michael Galizki
- Purchase: https://www.amazon.de/-/en/13-DAY-SPRINT-METHOD-Inspired-Management/dp/3384763025/
- Language: English
- Skill: We made this skill avaliable so you can use the method free of charge. If you need, you can purchase a workbook.
About the Author
Michael Galizki is an entrepreneur with extensive experience in IT project management and Agile methodologies. After discovering the natural cycles of the Maya calendar, he adapted them into a practical productivity system that maintains focus while preserving work-life balance.
Start your 13-day journey today. Check the calendar, find your tone, and take action. 📅✨