International Date Line International Date Line The International Date Line (IDL) is an imaginary line of demarcation on the surface of 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. The IDL is roughly based on the meridian of 180° longitude, roughly down the middle of the Pacific Ocean, and halfway around the world from the Greenwich meridian. In many places, the IDL follows
New Westminster Land District boundary of the land district proceeds southward so as to include the Village of Harrison Hot Springs and to bisect the District of Kent, excluding the town of Agassiz, roughly along 121 degree 17 minutes west longitude, to a point east of Rosedale to roughly 49 degrees 11 minutes north latitude, west a short distance to 121 degrees 47 minutes 38 seconds west longitude to roughly 49 degrees 10 minutes 32 seconds north latitude, east along that line which corresponds to Nevin Road to 121 degrees 9 minutes 7 second west and following that line south to 49 degrees 9