📅 Date Reference

Browse our collection of 5 date reference. All tools are free, accurate, and work on any device.

Week Number Calculator Find the week number of a date

Day of Year Calculator What day of the year is it?

Leap Year Checker Check if a year is a leap year

Unix Timestamp Converter Convert dates to Unix timestamps

Time Zone Converter View dates in different time zones

About Date Reference

Our date reference collection provides 5 free online tools for date and time calculations. Each tool uses JavaScript's native Date API for accurate calculations that account for leap years, time zones, and varying month lengths.