Yesterday, on October 16, 2015, the upper culmination of the Sun at the venue of the Olympiad was at 11:29:44 local time. Calculate as accurate as possible at what time the upper culmination of the Sun will be (or was) today.
Information given: Location: Kazan, Tatarstan, Russia 55°48’N 49°06’ E UT+3 A very rough Equation of Time is given, but the difference is indiscernible between two weeks (much less two days), thus we can only infer from this graph that mid-October gives a 15 minutes offset.
This is the first question of the International Astronomy Olympiad 2015 Theoretical Round
