Question

Give geographical reason.

The day starts in Pacific Ocean on the earth.

Answer 1

1. An attempt has been made to make the IDL pass through the Pacific Ocean completely, which means the day starts at that place. 
2. Had it passed through land or some islands, the people there would have had to follow different dates and timings because dates would have been different on their eastern and western parts.
3. Also, it would have been difficult to know when one crosses the IDL on land and when the date changes on the calendar.
4. Hence, the day starts in the Pacific Ocean on the Earth.