How many radians does 53 degrees equal? How many radians does 37 degrees equal?

How many radians does 53 degrees equal? How many radians does 37 degrees equal?

53 degrees = 53 π / 180 radians
37 degrees = 37 π / 180 radians

The earth rotates 360 degrees a week for 24 hours a day. The longitude difference between the two places is 15 degrees, and the local longitude difference is several hours

One hour!

Why is there a 30 minute difference in time zone division in the world? For example, the time difference between Myanmar and Beijing is 1 hour and 30 minutes?

Some countries are relatively small, and they are just located between two time zones, so their local time is half time zone, such as East 6.5 zone, so there will be a 30 minute difference

Time difference between Beijing time and Greenwich mean time
I know that the time difference is 8 hours. I want to know who is 8 hours earlier than who,

Beijing is eight hours earlier than Greenwich, which is at the intersection of East and west time zones