/var/run/tor/log might include.
Mar 20 01:01:02.000 [warn] Our clock is 1 days, 12 hours, 58 minutes behind the time published in the consensus network status document (2016-03-21 14:00:00 UTC). Tor needs an accurate clock to work correctly. Please check your time and date settings!
Probably the most common cause for connection issues. Would have been useful for the following two tickets.