Countdown Board (multiple events at a glance)
Pin multiple upcoming events (exams, trips, project deadlines, anniversaries, concerts…) onto a single board and watch each remaining time tick down side by side. Each entry takes just a name plus a date-time, and the whole board is auto-saved to your browser's localStorage so it survives reloads. The countdown (DDd HH:MM:SS) updates every second and flips to '—' once the deadline passes. Holds up to 50 entries. Runs entirely in your browser — nothing is uploaded.
How to use
1) Enter a name and date/time in the form at the top, then press Add. 2) Entries are sorted by date, with the remaining time (DDd HH:MM:SS) updating every second. 3) Use Delete on each entry to remove it, or Clear all to wipe the board. Data is auto-saved to localStorage so it survives reloads.
FAQ
- Does the data persist across reloads?
- Yes — entries are stored as JSON in localStorage and restored when you re-open the same browser on the same domain. They are erased if you close a private / incognito window or clear browser data.
- Can I sync across devices?
- No — the tool is fully client-side and never sends data to a server. To use the same board on another device, add the entries there too.
- Is there an entry limit?
- 50. Once you hit it, the form is disabled until you delete some.
- Which timezone is used?
- Your browser's local timezone. The datetime-local field stores wall-clock time on your device. For events in other timezones, convert to your local time first (e.g. NYC New Year's Eve 23:59 → JST 13:59 the next day).
- What happens when the date passes?
- The remaining cell flips to 'Expired' and stops counting. The entry stays on the board until you delete it manually (no edit-in-place yet).
- Is my input uploaded?
- No. Everything stays in your browser's localStorage.
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