Date format flipping

[TwoRice]

I'm using your chatline.py script and have come across a strange bug. For most of the month of July in one of my chats, the timestamp format flips from YYYY-MM-DD to YYYY-DD-MM. Example shown below

Code

Output

You can see here the date format is different between these 2 messages and I can't work out why.

I'll update if I find the source of the bug myself