Unfortunately for the Caucasus and other countries nearby you have this issue. EU flights depart late in the evening in Europe (allows for a nice connection from TATL and late European departures), arrives at TBS/EVN/GYD in late evening 2-3AM, stays there until 3-6AM and departs back, allowing for an easy connection to the morning bank of flights in Europe.

Very convenient for the airlines, but not for pax