I started playing on 120 minute days because it was less time pressing. I could take a break any moment without feeling that I'm missing time. We had an MP game of two people so pause wasn't an option. We also liked to venture out far and still have time to come back.
The problem we found was that 7 day blood moon hordes were jumping in difficulty too much. One horde you get no cops, the next horde you get cops and ferals. Difficult to predict the difficultly jump. It's 14 hours of real life time between hordes. Now, there are settings to make horde happen every 3 days, for example, so that might help. But then that's no different that 60 minutes, you just get longer nights.
In my SP games in the latest alphas I switched to 60 minutes, because I can set a pause if I need. I also get more frequent 7 day hordes so I get that feedback faster whether I should upgrade something. Latest alphas hordes have been tougher to deal with. I also feel like 60 minutes gives be better variety of gameplay. At 120 days can drag, I often found myself returning to my base in the middle of the day because I was tired of looting and just wanted to do some mining.
I haven't played a19 yet, but I will probably play at 60 minutes when I do.