HATS OFF TO ASTRONOMERS
CIRCUMFERENCE = 29400 MILES
70 MILES (110 KM PER DEGREE)
ROTATION 4 DEGREES PER MINUTE IE 15 DEGREES IN ONE HOUR.
NOTHINGS AND EASTINGS - ONE DEGREE IS 75 MILES
DELHI - 77 DEG 31 MINUTES EAST, 28 DEG 38 MIN NORTH.
INDIAN TIME LINE
