V Atlantic Standard E Eastern Standard (e = advanced time not observed) C Central Standard M Mountain Standard (m = advanced time not observed) P Pacific Standard A Alaska Standard H Hawaii-Aleutian Standard G Guam & Marianas S Samoa Standard
nn northern ss southern ea east ee eastern ww western er east central upper cc central pa panhandle eu eastern upper ne north eastern se south eastern nr north central upper nw north western sw south western sr south central upper nc north central sc south central wu western upper ec east central wc west central so south mi middle pd piedmont bb big bend up upstate