International Date Line The International Date Line http://aa.usno.navy.mil/faq/docs/international_date.php http://aa.usno.navy.mil/faq/docs/international_date.php The International Date Line http://aa.usno.navy.mil/faq/docs/international_date.php The International Date Line: U.S. Naval Observatory The International Date Line International Date Line http://aa.usno.navy.mil/faq/docs/international_date.php The International Date Line this page at the U.Â S.Â Naval Observatory