Labor Day / May Day
Labor Day, International Workers' Day, and May Day, is a day off for workers in many countries around the world.
Elsewhere on timeanddate.com
Ascension Day
Ascension Day is the 40th day of Easter. It is a religious holiday that commemorates the ascension of Jesus Christ into heaven.
AM and PM Explained
How does the 12-hour clock system work? Is midnight 12 am or 12 pm?
Daylight Saving Time (DST)
Why do many countries set the clocks back and forth an hour twice a year?