An aircraft departs an airport in the central standard time zone at 0930 CST for a 2-hour flight to an airport located in the mountain standard time zone. The landing should be at what time?

• A. 1030 MST
• B. 1130 MST
• C. 0930 MST
• D. 0830 MST

Answer: (A)

Time zones matter here: Mountain Standard Time is one hour behind Central Standard Time. With a two-hour flight starting at 0930 CST, the arrival time in the departure time zone would be 1130 CST. Converting to the destination’s local time by subtracting one hour gives 1030 MST. So, the landing should be at 1030 MST. (No daylight saving adjustments are involved since standard times are specified.)