How often is sh.itjust.works restarted?

I'd read that the Hot feed degrades over time while a server is running, and this is responsible for users being shown several month or year old posts when browsing by hot. Some instances like lemmy.world get around this by restarting the server several times a day.

I was just curious about how often sh.itjust.works is restarted, since I've been seeing a high amount of old posts on hot recently.