# Date & Time — YouCalc

> Age, durations, countdowns, and date arithmetic.

## All Date & Time calculators

- [Anniversary Countdown Calculator](https://youcalc.com/en/date-time/anniversary-countdown/): How long you've been together down to the day, the traditional gift for each year, and a countdown to your next anniversary.
- [Project Deadline Planner](https://youcalc.com/en/date-time/deadline-planner/): Schedule project phases in working days from a start date, skip weekends and holidays, and see whether you’ll hit the deadline — with a Gantt timeline and buffer. Free.
- [Meeting Timezone Fairness Calculator](https://youcalc.com/en/date-time/meeting-timezone-fairness/): Find the fairest meeting time for a global team. Enter each person's UTC offset and rank every slot by how evenly it shares the off-hours burden. Free, no DST guesswork.
- [Nth Weekday of the Month Finder](https://youcalc.com/en/date-time/nth-weekday-finder/): Find the exact date of the 1st–5th or last Monday, Thursday, etc. in any month and year — like the 3rd Thursday of November.
- [Time Card Calculator with Overtime](https://youcalc.com/en/date-time/time-card-overtime/): Add up weekly hours from daily clock-in and clock-out times, subtract breaks, and calculate overtime and pay under FLSA or California rules. Multi-currency, free.
- [Business Days Calculator](https://youcalc.com/en/date-time/working-days-counter/): Count working days between two dates excluding weekends and US/UK public holidays, or add and subtract business days. Custom holidays and a calendar view. Free.

## Optional

- [YouCalc](https://youcalc.com/en/)
- [XML sitemap](https://youcalc.com/sitemap.xml)