Time & Date · Durations
Countdown & Elapsed Time Calculator
Count down to an exam, launch, wedding or holiday — or count up from a past event — in days, hours, minutes and seconds, with the working days and weekends in between, in the event's own time zone.
How this is calculated
Remaining = Event instant − Now (both as moments in time, so time zones and daylight saving are handled)
- Calendar days
- Days between the two dates, ignoring the time of day
The event's local date and time are turned into an exact moment using its time zone, so a New Year countdown for India and one for New York differ by 10½ hours. The difference to now is split into days, hours, minutes and seconds; working days count Monday to Friday between the two dates.
Assumptions & sources
- 'Now' is your device's clock at the moment of calculation.
- Working days exclude only Saturdays and Sundays.
- 1IANA Time Zone Database — Internet Assigned Numbers Authority
- 2ISO 8601 — Date and time format (week numbering, calendar dates) — International Organization for Standardization
- 3Calendrical Calculations (Reingold & Dershowitz) — Cambridge University Press
Calculator ID TIME-COUNTDOWN-001 · version 1.0.0
Common questions
How many days until New Year?
Set the event to 1 January 00:00 in your time zone; the countdown shows the days, hours and minutes left from now.
Can I count time since an event?
Yes — enter a past date and the calculator shows the time elapsed since then.
Why does the time zone matter?
An event at midnight in India happens 5½ hours before midnight in London. The countdown uses the event's own time zone.