Switch to the dark mode that's kinder on your eyes at night time.

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Switch to the dark mode that's kinder on your eyes at night time.

Switch to the light mode that's kinder on your eyes at day time.

This Day in History: 1582-10-04

(October 04, 1582)
Pope Gregory XIII instituted the Gregorian calendar, which was adopted by a large number of countries during the next several centuries.
photo source: wikimedia.org

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