Yes... I 'think' it's 90 days.  It's automatic, and you are prompted when it is time.

That was what I thought and my experience in the past. However, my last update on May 27, 2024.is different. The password continues to work until now. I always write down my password and the date I change it. So, I am quite certain of when my latest change is.

Interesting.  I use a password manager on my phone that shows me all the dates I have changed my password since I started at this firm, since 7/11/22.  Typically it has asked me to change it every 3 months.  Yesterday, it had me change my password.  The odd thing is that the 3 month marker is tomorrow.  Hope it will not make me change it again tomorrow.