Tuesday, June 21, 2005

great links for solar/lunar data

I'm about to reveal some of my secrets here, some of my sources where I learn about interesting celestial events before they're a footnote on the 6 o'clock news.

U.S. Naval Observatory, Astromical Applications Department - The Data Services page has all sorts of astronomical calculators, including a Sun and Moon Data generator for any day.

An example of the data generated, for today:

Sun and Moon Data for One Day

The following information is provided for Huntsville, Madison County, Alabama (longitude W86.6, latitude N34.7):

21 June 2005 Central Daylight Time

Begin civil twilight 5:04 a.m.
Sunrise 5:34 a.m.
Sun transit 12:48 p.m.
Sunset 8:03 p.m.
End civil twilight 8:32 p.m.

Moonrise 6:56 p.m. on preceding day
Moon transit 11:47 p.m. on preceding day
Moonset 4:35 a.m.
Moonrise 8:08 p.m.
Moonset 5:37 a.m. on following day

Full Moon on 21 June 2005 at 11:14 p.m. Central Daylight Time.

A transit of either the sun or moon, is when it is at it's apex along it's path that day, at it's highest point.

Infoplease.com - Sun, Moon, and Stars: Movement of the Heavenly Bodies, June 2005

Archaeoastronomy.com - lots of animations explaining the seasons, what a solstice is, and calendars of astronomical events

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