The figure eight {analemma} on globes shows Sun declination for day of year.
Earth locations use lines {longitude}| {meridian} running from pole to pole. Longitude is in degrees, up to 180 degrees east or west from the prime meridian that runs through Greenwich, England.
At meridian 180 degrees east or west {International Date Line}|, time adds one day if traveling east, and time subtracts one day if traveling west.
The reference meridian {prime meridian}| runs through Greenwich, England, at zero degrees longitude.
Earth locations use lines {latitude, Earth}| parallel to equator. Latitude is in degrees. Equator is 0 degrees latitude. North Pole is 90 degrees north latitude. South Pole is 90 degrees south latitude.
The reference latitude {equator}| runs horizontally around Earth middle and is zero degrees latitude.
People cannot see Sun in winter in Southern Hemisphere above 66.5 degrees south latitude {Antarctic Circle}|.
People cannot see Sun in winter in Northern Hemisphere above 66.5 degrees north latitude {Arctic Circle}|.
Sunlight falls straight down on Midsummer Day at 23.5 degrees north latitude {Tropic of Cancer}| in Northern Hemisphere.
Sunlight falls straight down on Midsummer Day at 23.5 degrees south latitude {Tropic of Capricorn}| in Southern Hemisphere.
Zones {semitropics}| can be between tropic and temperate zones.
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Date Modified: 2022.0225