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Live countdown
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Days
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Label: My Event · Target: 2027-01-01 00:00 · Timezone: UTC
Summary & Exports
| Metric | Value |
|---|---|
| Status | Upcoming |
| Event label | My Event |
| Target (UTC) | 2027-01-01 00:00 |
| Total seconds | 29382126 |
| Total minutes | 489702.1 |
| Total hours | 8161.701667 |
| Total days | 340.070903 |
| Years (approx) | 0 |
| Months (approx) | 11 |
| Weeks | 48 |
| Days | 340 |
| Hours | 1 |
| Minutes | 42 |
| Seconds | 6 |
| Business days (Mon–Fri) | 244 |
| Business hours (approx) | 1,952.00 |
| Work window | 09:00–17:00 (Daily) |
| Working seconds in window | 9792000 |
| Working minutes in window | 163200 |
| Working hours in window | 2720 |
| Working days in window (approx) | 340 |
| Holidays excluded |
Example Data
Pre‑filled examples show upcoming time differences computed at the moment of page load.
| Event | Target (UTC) | Days left | Hours left |
|---|---|---|---|
| New Year | 2027-01-01 00:00 | 340 | 1 |
| Quarter End | 2026-12-31 17:00 | 339 | 18 |
| Project Alpha Launch | 2026-11-15 09:00 | 293 | 10 |
| Anniversary | 2027-02-14 00:00 | 384 | 1 |
Formula used
Let ttarget be the target timestamp and tnow the current timestamp in seconds within the selected timezone. The signed difference is Δt = ttarget − tnow.
- Total seconds = Δt
- Total minutes = Δt ÷ 60
- Total hours = Δt ÷ 3600
- Total days = Δt ÷ 86 400
- Weeks = ⌊|Δt| ÷ (7 × 86 400)⌋
- Years (approx) = ⌊|Δt| ÷ 31 557 600⌋ (365.25 days)
- Months (approx) = ⌊|Δt| ÷ (30.44 × 86 400)⌋
- Business days (Mon–Fri): count calendar days between dates excluding Saturdays, Sundays, and any holiday dates provided.
- Working-window seconds: sum over each day of the overlap between [work_start, work_end) and the global interval [now, target], skipping weekends/holidays when business‑day mode is enabled.
- Working hours = working‑window seconds ÷ 3600. Working days (approx) = working hours ÷ hours per business day.
Partial days are handled automatically by overlap math on the first and last day. DST transitions are handled by the timezone engine.
How to use this calculator
- Enter an event label to identify your countdown.
- Select target date and time then pick the timezone for the event.
- Enable business‑day mode to skip weekends and enter holiday dates if needed.
- Set your daily working window start and end times such as 09:00 to 17:00 to count only productive hours.
- Optionally upload or paste an iCal file. The first upcoming DTSTART becomes the target and SUMMARY populates the label.
- Click Calculate. Export results or the example table as CSV or PDF.
Tip: Use your local timezone to align with office hours. If end ≤ start we’ll auto‑adjust to at least one hour.
FAQs
Yes. Pick a timezone from the list and all calculations will use it. The live ticker and all tables respect your selection.
The status row shows Past. Values are computed from the absolute difference so you still see how long it has been since the event.
They are approximations using 30.44 days per month and 365.25 days per year. For calendar‑exact spans, iterate month-by-month.
Yes. Use the buttons above each table. CSV is created client‑side. PDF is generated in the browser using a lightweight script.
We sum only the overlap between your daily window and the overall interval. When business‑day mode is on we also skip weekends and listed holidays.