Winter Arc Tracker
Winter arc runs October 1 to December 31 — 92 days. Set your own start date below and the tracker counts your days, your remaining days and your check-in streak automatically. Starting late is fine: today can be your day 1.
Your log is saved on this device only (browser local storage). Nothing is uploaded.
What is the winter arc?
The winter arc is a self-set discipline challenge for the last quarter of the year: pick a short list of daily non-negotiables and hold them every day while everyone else winds down for the holidays. The idea went viral on TikTok in fall 2024 and returns every October. The point is arriving at New Year's Eve already three months into your goals — instead of waiting for a January resolution.
Winter arc dates
October 1 to December 31 — 92 days, though the community conventionally calls it a 90-day challenge. There is no official start date: some start at the autumn equinox, some on November 1, and the tracker above supports any start date you choose.
| Challenge | Start | End | Days |
|---|---|---|---|
| Winter Arc | Oct 1 | Dec 31 | 92 |
| Great Lock In | Sep 1 | Dec 31 | 122 |
Winter arc rules
There is no official rulebook — you write your own. The most common structure is three to five daily non-negotiables:
- Train or move — a workout, run, or walk, most days of the week.
- Deep work or study — a fixed focus block, every day. The pomodoro timer works well here.
- Cut one distraction — junk food, energy drinks, or doomscrolling.
- Train your mind — read, journal, or learn a skill.
- Check in daily — one tap above keeps your streak honest.
Frequently asked questions
When does winter arc start?
The most common winter arc start date is October 1, running through December 31 — 92 calendar days. There is no official start date; many people start late and count from their own day one.
How long is the winter arc?
October 1 to December 31 is 92 days, though the community conventionally calls it a 90-day challenge. Starting on a later date shortens your arc; the tracker counts exactly what remains.
Is it too late to start the winter arc?
No. Set your start date to today and the tracker counts your days from there — today becomes day 1, and you still finish your arc with the new year.
What are the winter arc rules?
There is no official rulebook. Most participants pick three to five daily non-negotiables across training, study or work, nutrition, and screen time, then hold them every day until the end.
Winter arc vs Great Lock In — what's the difference?
The great lock in starts a month earlier (September 1) and runs 122 days; the winter arc is the tighter 92-day version from October 1. Same spirit, different window.
Power your arc with the free pomodoro timer, or go back to lock in app for streaks and the session log. The longer great lock in challenge runs through the same end date.