>This is very weird. They used to be months 7, 8, 9, and 10, but some reform to the Roman calendar back in the day resulted in the creation of January and February, which messed everything up.

I agree in that I don't like the snark but this one fact bugs me more than people can possibly empathize with. Once I realized October should be the eighth month, switch was permanently flipped in my brain and now I type 8 for October and it trips me up constantly.

Look, I get that calendar reform isn't easy. But the old months were all clearly named after numerical sequences. Why would the Romans intentionally break the numbering?!?!