Login cookies on my website

[אורי‎]

Hi,

I just checked browsers where I was supposed to be logged in to my website, after about 2 months I didn't use these browsers, and I was automatically logged out. (It was Opera and Firefox). Do browsers delete cookies after some time not using them? The cookies are defined for 30 years. I also upgraded the version of Django on the website, but I don't think upgrading Django should log me out. At least as far as I remember, in another browser I wasn't logged out because of upgrading Django. But I'm not sure actually, maybe upgrading Django logged me out? I upgraded Django from 2.1 to 2.2 and then 3.0.

אורי

u...@speedy.net