21 June 2016, First Summer Solstice Full Moon in Nearly 70 Years

A solstice is an astronomical event that occurs twice each year (in June and December) as the Sun reaches its highest or lowest excursion relative to the celestial equator on the celestial sphere. The seasons of the year are directly connected to both the solstices and the equinoxes.
The term solstice can also be used in a broader sense, as the day when this occurs. The day of the solstice is either the longest day of the year (summer solstice) or the shortest day of the year (winter solstice) for any place outside of the tropics. Alternative terms, with no ambiguity as to which hemisphere is the context, are June solstice and December solstice, referring to the months of year in which they take place.

At latitudes in the temperate zone, the summer solstice marks the day when the sun appears highest in the sky. However, in the tropics, the sun appears directly overhead (called the subsolar point) some days (or even months) before the solstice and again after the solstice, which means the subsolar point occurs twice each year.

The word solstice is derived from the Latin sol (sun) and sistere (to stand still), because at the solstices, the Sun stands still in declination; that is, the seasonal movement of the Sun's path (as seen from Earth) comes to a stop before reversing direction.
Today marks a special day for astronomy enthusiasts. The summer solstice and June’s strawberry moon will coincide for the first time in nearly 70 years.

The solstice will arrive at 01:34am with the moon turning full at 2:02am on Tuesday

For the first time in about 70 years, since 1967, the summer solstice will coincide with a full moon in the northern hemisphere. Specifically, the solstice will arrive at 01:34am on Tuesday, with the moon turning full at 2:02am.

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