7 Big Astro Events in Your Lifetime
Your astronomical bucket list—the biggest sky and space highlights of the next half-century you can see with your own eyes.
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Lunar New Year's Day
Lunar New Year is the first day of the Chinese calendar, which is a lunisolar calendar mainly used for traditional celebrations.
Halloween
Halloween is a festive occasion that is celebrated in many countries on October 31 each year.
AM and PM Explained
How does the 12-hour clock system work? Is midnight 12 am or 12 pm?