it's birthday season around my house. my youngest wanted to know exactly when he was born. presumably so he could argue that he should be allowed to open his birthday presents at 2:03 am. on a school night. so then we got into a bit of a discussion about when he turns exactly 10 years old. and what time that would be. and when he gets to open his presents. a year is 365.24 days long. which isn't a whole number. hence the need for nearly regular leap years. that extra fractional 0.24 means you have to wait a full 365 calendar days plus 5 hours 45 minutes and 36 seconds. so your time of birth shifts by nearly a quarter of a day later every year. and then a whole 24 hours earlier when there's a leap year. so i did the calculation for him. turns out his birthday is at 11:39 am. which was right around when we were delivering cookies to his classmates. score. i'm pretty sure the older chiild is going to want to know when his birth time is this year. pretty sure i'm going to make him figure it out himself. muhahahahahahahah!