Date Line
noun[S]
ukus(alsoInternational Date Line,abbreviationIDL)animaginarylineon themapof theearththat goes from theNorthPoleto theSouthPole. To theeastof thisline, thedateis onedayearlierthan to thewestof it:
Severaljetsencounteredsoftwareproblemsas theycrossedtheInternationalDate Line.