Business Days
Working days between two dates.
16 tools
Date & Time tools
Business-day math (Japanese holidays included), UNIX timestamps, timezone conversion and date differences.
Search by name, task or keyword.
16 results
Unix Timestamp
Convert epoch seconds to dates.
Timezone Converter
Compare times across zones.
Date Diff
Duration between two dates.
Age Calculator
Calculate exact age in years, months, and days.
Date Add / Subtract
Add or subtract years, months, days, hours, minutes.
Week Number Calculator
ISO week ↔ calendar date.
Day of Week Finder
Weekday and Japanese rokuyo for any date.
Duration Calculator
Add/subtract/sum durations (h:mm or decimal hours).
Date Format Converter
Parse a date and show ISO, RFC2822, Unix, and custom patterns.
Countdown Timer
Count down to a target date and time (shareable query).
Pomodoro Timer
25/5 Pomodoro cycles with optional desktop notifications.
ICS Generator
Build a downloadable .ics calendar event.
Sunrise Sunset Calculator
Sunrise, sunset, and solar noon from lat/lon.
Moon Phase Calculator
Moon age, phase, visual moon, and monthly calendar.
Calendar Generator
Generate a printable monthly calendar with JP holidays.