I suspended my machine and now got back to work. I want to figure out at what time I suspended the machine. Is there any way to somehow look up the time? 
Figure out at what time the machine was suspended
arch linux;logs;systemd;suspend
It is printed to the journal. You can read it with journalctl | grep Suspend:Mar 31 15:28:29 Shiv systemd[1]: Started Suspend.