HOW MANY SECONDS IN A YEAR：What Is a Leap Year? | NASA Space Place – NASA Science for Kids

how many seconds in a year   how to be a good listener Leap years are important so that our calendar year matches the solar year — the amount of time it takes for Earth to make a trip around the Sun. Subtracting 5 hours, 46 minutes and 48 seconds off of a year maybe doesn’t seem like a big deal. But, if you keep subtracting almost 6 hours every year for many years, things can really get messed up

how to center a div If you set this property to center in outer div, then all inner elements are horizontally centered. This can also be used to horizontally center div inside another div. #inner width:50%; display:inline-block; #outer text-align: center; In the above code, we set text-align:center property on outer div

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