Each year on June 20 or 21, the sun is as far north as it can get from the celestial equator, marking the solstice. Credit: Starry Night SoftwareFrom Live Science:
If you've been waiting for the chance to get more done during the day, Sunday is your day, but only by a fraction of a second.
Like a giant timepiece, Earth and sun are configured for the summer solstice once again. This year it happens June 21, the longest day of the year in the Northern Hemisphere. The sun will be up a fraction of a second longer than the day prior or the day after. (The length of the full day, including night, does not change, of course.)
To grasp how it works, one must understand Earth's cockeyed leanings and some celestial configurations that even the ancients knew something about.
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