In 1875, 17 Countries Signed the Metre Convention
A quick guide to the meter—the standard unit of length—with 4 examples of where the meter is part of day-to-day life in the USA (instead of inches, yards, and miles).
Elsewhere on timeanddate.com
The Micro Flower Moon in May 2025
Explore the Micro Flower Moon in May 2025, when the Full Moon will be at its farthest point from Earth. Find out when you can best view this unique lunar event.
Moon Guide for May
In May, the Moon aligns with Venus and Saturn. Read more about May’s Moon events and what makes this month’s Full Moon special.
Peace Officers Memorial Day
Peace Officers Memorial Day is held annually in the United States on May 15 in honor of federal, state and local officers killed or disabled in the line of duty.