GC83P1N Vernal Equinox 2019 (Event Cache) in Nebraska, United States created by TeamDAAK

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GC83P1N ▼

A cache by TeamDAAK Message this owner

Hidden : Wednesday, March 20, 2019

Difficulty:

Terrain:

Size: Size: other (other)

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Geocache Description:

20 March 2019, 18:00 - 19:30

Come celebrate the official changing of the season from winter to spring.

Sgt. Peffers
13760 Millard Ave Omaha, NE 68137
(402) 932-6211

We have the party room reserved from 6:00 pm to 7:30 pm CT.
No purchase is required.
Food and beverage purchases will only be at the counter.

An equinox occurs twice a year (around 20 March and 22 September), when the tilt of the Earth's axis is inclined neither away from nor towards the Sun, the center of the Sun being in the same plane as the Earth's equator. The term equinox can also be used in a broader sense, meaning the date when such a passage happens. The name "equinox" is derived from the Latin aequus (equal) and nox (night), because around the equinox, the night and day have approximately equal length.

At an equinox, the Sun is at one of two opposite points on the celestial sphere where the celestial equator (i.e. declination 0) and ecliptic intersect. These points of intersection are called equinoctial points: classically, the vernal point (RA = 00h 00m 00s and longitude = 0º) and the autumnal point (RA = 12h 00m 00s and longitude = 180º). By extension, the term equinox may denote an equinoctial point.

The equinoxes are the only times when the subsolar point is on the Equator. This point (the place on the Earth's surface where the center of the Sun can be observed exactly overhead) crosses the Equator moving northward at the March equinox and crosses the Equator moving southward at the September equinox.

The date at which sunset and sunrise becomes exactly 12 hours apart is known as the equilux. Because times of sunset and sunrise vary with an observer's geographic location (longitude and latitude), the equilux likewise depends on location and does not exist for locations sufficiently close to the Equator. The equinox, however, is a precise moment in time which is common to all observers on Earth.

Omaha Equilux March 17 Sunrise: 06:33 am Sunset: 06:33 pm

Omaha Sunrise/Sunset table (visit link)

US Naval Observatory Data Services (visit link)

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