Saturday, March 17, 2007

20 March, Solar Noon - Vernal Equinox

The Sun Triangle at 49th & 6th Ave.

In Universal Time (UT), Vernal Equinox occurs, Wednesday, 21 March 2007 at 7 minutes past midnight in the Age of Pisces. For NY'ers, we adjust for Eastern Daylight savings Time (EDT) 4 hours earlier, resulting with the Equinox on 20 March 2007, 8:07pm EDT. (This standard time is estimated as I don't account for local mean solar time.)

If you want to celebrate the event in some festive way, gather at the McGraw-Hill Sun Triangle just before 1:00pm on Tuesday, the 2oth, to watch the Triangle's shadow shorten and the Sun align along the upper long side. Almost certainly there will be others that share this interest and welcome the arrival of Spring. (We recognize this date as Spring, but if you are south of the equator like astroblogger Ian, one recognizes Fall. )

Mapping info to find the Sun Triangle
Microsoft Live Local: Bird's Eye View || Aerial
Google Map: Hybrid
Great Buildings: McGraw-Hill Building

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