Holidays are missing entirely

I honestly don't know when it started, but I just noticed that my game is completely missing all holidays. It seems like all the festivals still show up, as well as school events, etc., but none of the *holidays*: Winterfest, Harvestfest, Spooky Day, Love Day, New Year's Eve, etc.

I noticed it on my PC where I have mods and CC, so I removed it all and checked - still missing.

So I moved over to my laptop that is 100% vanilla, with no mods or CC, and started a new save - still missing.

I went digging through the forums and found a couple of people commenting about something similar:

Missing holidays | EA Forums - 12072971

Re: holidays disappeared | EA Forums - 9221973

The second one in particular, it seems that this issue was disregarded and closed because there were focused on the inability to take vacation for holidays.

I own all DLCs and packs, and haven't experienced this before (I'm guessing based on looking at videos I recorded previously) about ~1 month ago.