24/7
march 21st and September 21st
September 22
Labor day is one day, the first Monday of September
sometime in September i believe it was the 25 of September
The September equinox can occur at any time from the 21st to the 24th of September.
September 27, 1821.
September 2, 1945.
From 24th November 2009 until 3rd September 2010 It is 284 days, start day and end day included.
It is 146 days from the start date to the end date, start day and end day included.
Memorial Day is observed on the last Monday of May, and the end of summer is typically considered to be around September 21, the date of the autumn equinox. This means there are approximately 113 days from Memorial Day to the end of summer. However, if you're considering the unofficial end of summer (Labor Day), which is the first Monday in September, there would be about 100 days.
An equinox occurs when the length of the day is equal to the length of the night. Here on Earth, it occurs around March 21 (the Vernal Equinox) and September 21 (the Autumnal Equinox).
march 21st or September 22nd