The angle between the two places =80∘−20∘ The angle between the two places =60∘ Every 1∘=4 minutes 60∘=4×60 minutes =240 minutes 60 minutes =1 hour 240 minutes =4 hours 9:00 a.m. +4 hours =1:00 p.m. Note: 3 hours will give 12 noon (9+3=12) and the remaining hour gives 1 p.m.