Definition of

Solstice

Solstice
When the Earth is the most tilted away or towards the Sun.

The days when this happens are called:

• Summer solstice (the longest daytime of the year)
• Winter solstice (the shortest daytime of the year)

Solstice happens around June 21 and around December 21 each year.

See this animation for why it happens:
See: Equinox

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