Calculate time differences between two places on Earth.

Three research stations are located at different positions on Earth. The table below shows their coordinates. A shipping company operates a supply route connecting all three stations. A supply vessel departs from Station P at 08:30 local time on Monday and travels directly to Station Q, where it arrives after 18 hours of travel time. (a) Calculate the time difference between Station P and Station Q. (2 marks) (b) Determine the local time and day at Station Q when the vessel arrives. (2 marks) (c) If it is 14:00 local time at Station R on the same Monday, calculate the corresponding local time at Station P. (1 mark)

If it is 10:00 am local time in City X (22° S, 150° E), calculate the local time in City Y (15° N, 135° E).

If it is 10:30 am local time in City P (45° N 75° W), calculate the local time in City Q (34° S 105° E).

A shipping vessel departs from Port Adelaide (34.8° S 138° E) at 11:30 am local time on a Thursday and travels directly to Port Moresby (9.5° S 147° E). Calculate the local time and day in Port Moresby at the moment the vessel departs Port Adelaide.