When it's dark outside! -When the sunshine (Me) goes to bed! ;)
Night officially starts at sunset, which is when the sun goes below the horizon. It is marked by a decrease in natural light and the beginning of darkness.
Summer officially starts on the summer solstice, which falls around June 20-22 in the Northern Hemisphere, and ends on the fall equinox, which falls around September 22-23.
In the past year, it stayed at a relatively stable 50%.
The US officially counts its population every 10 years through the decennial census conducted by the Census Bureau.
San Antonio was officially founded as a city on May 1, 1718, by Spanish settlers.
the world's most amazing machine may be the human body itself
Friday
in the year of 2000.
in 500
It already started
1947.
There are officially 88 constellations.
Officially founded in 1853
Officially? 1998.
november
D Day officially started at 00.16 when British glider troops landed at Caen. It officially ended at mid-night on June 6, 1944, that same day. Operation Overlord continued as D Day was only the first day.
everyday
The Aztecs officially were founded in 1325.