Private calendar clarity

Answer date questions.
See every assumption.

Compare dates, count workdays, plan across time zones, and create calendar files—all on this device, without an account.

Today on this device

Your local date appears after the app loads.

Start with a familiar task

See the difference in years, months, days, and total days.

Move forward or backward by days, weeks, months, or years.

Calculate an age, the next birthday, and time until an anniversary.

Count or add workdays using your weekends, days off, and public holidays.

Convert a date and time between places around the world.

Find meeting times that fit two to six people in different time zones.

Birth dates, event details, work calendars and imported files stay in your browser. Share links are created only when you ask.

Your weekend, days off, and public-holiday choices stay visible beside the result.

Time zone calculations account for daylight-saving changes and explain unusual local times.