Originally Posted by
FallOfTheWall
The departure time showing in FR24 is the actual takeoff time and not the pushback time which is what the scheduled departure time is. At some very busy airports an hour of taxi time isn't unheard of.
Just looking at the last 3 days, pushbacks (against a schedule of 16:05) were
24th : 16:26, takeoff 17:02
25th : 16:43, takeoff 17:07
26th : 16:26, takeoff 16:56
which confirms the OPs observation that this flight consistently pushes late.
To summarise the OPs screenshots for easier reading :