To change the calendar date when traveling, you must cross the International Date Line, which is located roughly along the 180th meridian in the Pacific Ocean. When you cross this line eastward, you subtract a day, and when you cross it westward, you add a day. This imaginary line helps account for the Earth's rotation and the 24-hour time zones.
When you cross the IDL, you turn your calendar one whole day, either forward or backward depending on what direction you're traveling. If you're traveling westward, with the US behind you and Japan in front of you, turn your calendar forward a day when you cross the line, and skip 24 hours. If you're traveling eastward, with China behind you and Canada in front of you, turn your calendar back a day when you cross the line, and repeat the previous 24 hours.
Becuase when you cross the Dateline, The time zone changes ahead because of how the hour changes 24 times in the world, It would be excaclty a day later. When you cross the Dateline It would be tomorrow, or yesterday. Whichever way you cross.
The prime meridian crosses Lake Volta.
The prime meridian crosses Lake Volta.
Brazil
Nothing at all.
Nothing special happens. If the flight crew didn't tell you about it, you wouldn't notice anything. It's handy to know about it, though, because when you cross the IDL traveling east, you're supposed to turn your watch and your calendar back a day.
The Prime Meridian doesn't cross any territory of India.
The Prime Meridian does cross parts of Mali.
When you cross the International Date Line, you move from one day to the next. This imaginary line on the Earth's surface marks the change in calendar days.
Africa
Yes, you do.