Date & time

Count days and weeks between two dates, with an inclusive end-date option.

Find an age in years, months and days, on any date you choose.

Shift a date by years, months, weeks and days using a clear month-end rule.

Count workdays with your own weekends and explicit holiday dates.

Count down to a date and time in a named time zone.

Add or subtract durations and find elapsed time, including overnight.

Add shifts and unpaid breaks to get weekly and decimal-hour totals.

Convert a dated local time between IANA zones with DST ambiguity checks.

Find half-hour meeting slots inside each participant's working hours.