Topics in the timeanddate.com Library

Our extensive library of articles, sorted by topic. Learn about timekeeping, astronomy, the development of calendars, and much more.

Advertising: Content continues below ad.

You might also like

Perseid Shooting Star Alert!

Perseid Shooting Star Alert!

The Perseid meteor shower peaks between August 12 and 14 with up to 110 shooting stars per hour. Find them with our Interactive Meteor Shower Sky Map. more

Sturgeon Moon in August

Sturgeon Moon in August

The Full Moon in August is named after the lake sturgeon. Find date and local time for the Full Moon in any location. more

Commuters and tourists in Canary Wharf, London, United Kingdom.

Daylight Saving Time (DST)

Daylight Saving Time (DST) is the practice of setting the clocks forward one hour from standard time during the summer months, and back again in the fall, in order to make better use of natural daylight. more

Calendar with 12 months

12 Months of the Year

The 12 months of the year are linked to the Moon's orbit around Earth. Why are there 12 months? What do the month names mean? more

Achtung! This page is now available in German!