The areas that are the first to see the daylight of a new day vary by the season.Around the June solstice, the first area would be anyplace within the Kamchatka Time Zone (UTC 12) that is far enough north to experience midnight sun on the given date.
During the second hour (UTC –) one of the calendar dates is limited to an uninhabited maritime time zone twelve hours behind UTC (UTC−12).
According to the clock, the first areas to experience a new day and a New Year are islands that use UTC 14.
The International Date Line (IDL) is an imaginary line of navigation on the surface of the Earth that runs from the North Pole to the South Pole and demarcates the change of one calendar day to the next.
It passes through the middle of the Pacific Ocean, roughly following the 180° line of longitude but deviating to pass around some territories and island groups. (Times are approximate, since time zone boundaries generally do not exactly coincide with meridians.
It is the result of the 1917 Anglo-French Conference on Time-keeping at Sea, which recommended that all ships, both military and civilian, adopt hourly standard time zones on the high seas. This date line is implied but not explicitly drawn on time zone maps.