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There are four principal (primary, or major) lunar phases: the new moon, first quarter, full moon, and last quarter (also known as third or final quarter), when the Moon's ecliptic longitude is at an angle to the Sun (as viewed from the center of the Earth) of 0°, 90°, 180°, and 270° respectively.
The first day of each month is the new moon. On the seventh or eighth day of each month, the first-quarter moon is visible in the afternoon and early evening. On the 15th or 16th day of each month, the full moon is visible all night. On the 22nd or 23rd day of each month, the last-quarter moon is visible late at night and in the morning.
The last quarter of the year is the fourth quarter or Q4. This quarter takes place in October, November and December. Q4 is the time when most companies have to hustle.
A lunisolar calendar was found at Warren Field in Scotland and has been dated to c. 8000 BC, during the Mesolithic period. [2] [3] Some scholars argue for lunar calendars still earlier—Rappenglück in the marks on a c. 17,000 year-old cave painting at Lascaux and Marshack in the marks on a c. 27,000 year-old bone baton—but their findings remain controversial.
Spending on goods such as appliances and furniture fell at a 1.9% annual pace, the biggest such quarterly drop since 2021. Still, services spending rose at a healthy 3.9% clip, the most since mid ...
Here are 10 surprising facts about Women’s History Month. ... Zetkin reportedly suggested in 1921 that March 8 become International Women’s Day as a result. Women’s History Month started as ...
One in five to six years has a 53rd week which is usually appended to the last quarter. It is then 98 days instead of 91 days long, which complicates comparisons. In the Chinese calendar, the quarters are traditionally associated with the 4 seasons of the year: Spring: 1st to 3rd month; Summer: 4th to 6th month; Autumn: 7th to 9th month; Winter ...
Image credits: historians #3. East German soldier helps a little boy sneak across the Berlin Wall the day it was erected in 1961. The boy had been left behind in the chaos of people fleeing to be ...