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Regents Alert*****.  To find out the date you must look at the position of sunrise and sunset.  June 21- Northeast to Northwest.  Dec. 21- Southeast.

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Presentation on theme: "Regents Alert*****.  To find out the date you must look at the position of sunrise and sunset.  June 21- Northeast to Northwest.  Dec. 21- Southeast."— Presentation transcript:

1 Regents Alert*****

2  To find out the date you must look at the position of sunrise and sunset.  June 21- Northeast to Northwest.  Dec. 21- Southeast to Southwest.  March 21 & Sept 22- Due East to Due West.

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4  To find out location you need to look at the altitude of the sun at Solar Noon.  June 21 – Solar Noon directly overhead at 23 ½ North. (Tropic of Cancer)  Dec. 21- Solar Noon directly overhead at 23 1/2 South. (Tropic of Capricorn)  March 21 & Sept. 22- Solar Noon directly overhead at the equator.  The sun is never directly overhead in NYS.

5  On June 21 st the sun will always be in the sky at the North Pole.  On Dec 21 st the sun will always be in the sky at the South Pole.

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7  Link 1 Link 1  Link 2 Link 2  Link 3 Link 3  Link 4 Link 4  Link 5 Link 5

8  Equinox Dates:  90º - Your present Latitude Summer Solstice: Equinox altitude + 23.5º Winter Solstice: Equinox altitude - 23.5º

9  Get your bearings down (Where is South?)  Use the date to determine direction of Sunrise (SE;E;NE)  Use the date to determine direction of Sunset (SW;W;NW)  Use your Latitude and date to calculate the correct altitude of the Sun at noon.  Draw your arc by connecting these 3 points.

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11 March 21 st ; Equator

12 December 21 st ; 60°N

13 September 23rd; Tropic of Cancer

14 June 21 st ; North Pole


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