Some data on how rare it actually is to be born during an eclipse?
The eclipse a couple of nights ago got me thinking about the thing that comes up every eclipse season, people calling themselves eclipse babies. so i pulled every eclipse from 1900 to 2100, all 909 of them, and worked out the odds properly.
turns out the answer swings by a factor of 25 depending on what you mean by during.
the loose version is being born on the calendar day of any eclipse, solar or lunar. that's 909 days spread across two centuries, so about 1 in 80 people. common enough that most people have a few people they know that fall in this category
the strict version is being born while the moon is actually inside earth's shadow. that window only exists during a lunar eclipse and it averages about three hours, which adds up to roughly 850 hours in the whole 200 years. that's about 1 in 2000, five or six times rarer than being born on christmas day. and the day version shifts a little with your timezone, but the shadow version doesn't, the moon is in the shadow for everyone at once.
this last one held the moon in shadow for about three hours twenty minutes and covered 97 percent of it at peak, which is about as deep as a partial can get. its family has been deepening for over a century and from 2044 the same family comes back total. and if you watched the total eclipse of august 2007, this one landed nineteen years later to the day at the same degree of pisces. the calendar rhyme and the deepening are two separate cycles doing their own thing.
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