equinox

What Is the Longest Day? The Summer Solstice Around June 21

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The “longest day” is the day with the most daylight (and the shortest night) in the Northern Hemisphere. It happens around the June (summer) solstice, typically between June 20–22, and most often near June 21. This is driven by Earth’s axial tilt, not by daily weather changes. When does the longest day happen? Example (Istanbul … Read more

What Is the Longest Night? The Winter Solstice Around December 21

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The “longest night” is the night that comes with the shortest day of the year in the Northern Hemisphere. It happens around the December (winter) solstice, which falls near December 21 most years (it can shift between Dec 20–22). This is not caused by day-to-day weather. It happens because Earth’s axis is tilted, so sunlight … Read more