Answer :
I believe the answer is: 0-180
The number of this lines represent how much a territory is deviated from the place that we considered as the central of the timezone, (currently the central is located on Greenwich, England). As the number deviate larger from 0, the difference in time would also be increased if measured in Greenwich mean time.
The number of this lines represent how much a territory is deviated from the place that we considered as the central of the timezone, (currently the central is located on Greenwich, England). As the number deviate larger from 0, the difference in time would also be increased if measured in Greenwich mean time.
