Help and Example Use
API Services for Developers
Date Calculators
- Time and Date Duration – Calculate duration, with both date and time included
- Date Calculator – Add or subtract days, months, years
- Weekday Calculator – What Day is this Date?
- Birthday Calculator – Find when you are 1 billion seconds old
- Week Number Calculator – Find the week number for any date
Related Links
- Date/calendar related services – Overview
- Calendar Generator – Create a calendar for any year.
- The World Clock – Current time all over the world
- Countdown to any date