GLSCORE
Time & Date

Main hub

Time & Date Calculators

Check the weekday for any date, open a full calendar month, or follow recurring calendar matches across the archive.

Years included 1900 to 2100

Choose a tool

Start with the tool that matches your intent, then move into the exact date, calendar, or pattern pages.

A few helpful examples

These examples show how one exact date can open into a month view and a wider set of calendar matches.

Quick date lookup

Enter any date to open the full result page.

From 1900 to 2100.

What you can explore here

This section covers the full date range while keeping the main entry points simple and easy to follow.

73,414 Exact dates

Each date opens with the weekday, day-of-year details, and useful follow-up facts.

2,412 Calendar months

Open any month to see the full calendar, ISO weeks, and linked date pages.

2,830 Recurring matches

Explore matching month layouts, matching year layouts, and repeating day-and-weekday combinations.

19 Extra reading

Short month and weekday references add background when people want more context.