It is 4:00 a. m. at the Prime Meridian in Greenwich, England. What time is it 105 degrees east of the Prime Meridian

It will be 9 p.m. at 105 degrees east of the Prime Meridian.

Explanation:

The meridians are lines that are imaginary and have been put in place so that they satisfy some of the human needs. One of those needs has been the establishment of time zones. The Prime Meridian has been set as a zero zone, or rather east from it every time zone is counted with -, while every zone west of it is counted with +.

There are 180 degrees east and west of the Prime Meridian, thus 360 degrees in total. There are 24 time zones, so each of them is set at 15 degrees. 105 degrees east of the Prime Meridian is 7 times zones away, and it is with a minus in front of it, thus seven hours earlier, meaning that if it is 4 a.m. at the Prime Meridian then it is 9 p.m. at 105 degrees east of it.