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Small-Scale Question Sunday for January 12, 2025

Do you have a dumb question that you're kind of embarrassed to ask in the main thread? Is there something you're just not sure about?

This is your opportunity to ask questions. No question too simple or too silly.

Culture war topics are accepted, and proposals for a better intro post are appreciated.

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Andrew was born on 1896-07-26, he celebrated his 7th birthday on 1903-07-26, when he was 2555 days old.

Bob was born on 1904-01-19, he celebrated his 7th birthday on 1911-01-19, when he was 2557 days old.

Charlie was born 1904-01-19, he celebrated his 1st birthday on 1905-01-19, when he was 366 days old.

David was born on 1904-07-26, he celebrated his 1st birthday on 1905-07-26, when he was 365 days old.

Did I make any mistakes?

That would depend.

Old style or new?

Checks out in lubridate, which I'm very confident works back until at least Friday 15 October 1582. I think it might even work before that, but would have to do a bunch of digging to be 100% sure what the first epoch it can check is.

You also picked the golden era where the Gregorian calendar reformations were locked in, but you don't even have to deal with leap seconds, UT1, UTC, ... etc if you want periods down to the second.

Given that you didn't correct me, I assume you think I am right. Thank you for taking the time, but precision to the day and dates in the 20th century is all I need.