??????? ?????????????? ??? ( ????. Universal Coordinated Time ? UTC, ???????????? ?????????????? ??? ) ? ?????? ???????? ??????? ????? ????????? , ?????????? ????? ?????????. ??????? ???????? ???????????? ????? ????? ????????, ???? UT1 -???? ?????? ????????.

UTC ????????? ???? ??????????? ????????? ????????? ????? (GMT) ???????. ????? ????? ?????? UTC ????????? ????, GMT ??????? ?????????????? ????, ??? ?????????? ??? ????????? ???-?????? ???????. UTC ?????? ???????????? ??????? ????? ??????? ??????? ( TAI ) ?? ???? ?????????????? ?????????? ??????????????.

???? ????, ??? UTC-?? ?? UT1-? ????? ??????? ?? ????????? 0,9 ??-?, ??????????? ???? ????? ??????? ???????? ??????? - ??????? ??? (UT), ?? ?? ???? ???? ?????? ???????? ????????? ?? ????????. ????????? ??????, ??????? ????? ?????? ??????? ???????????, ????????? ????????? ??? (GMT) ???????? ?????????? UTC-?? ?? UT1-?? ????????????. ???? ???????????, ??????? UTC-?? ?? UT1-? ????? ??????? ?????????, ????????? ????????? ????? (GMT) ??????????? ?????????. ????????????, ??? UTC ??? ?? ??????? ??????-??????????.

????????? ?????????? [ ??????????? | ?????? ??????????? ]

• BIPM UTC/TAI ????? ???????
• thetimeNOW ? ????????? ??? ????? ??????? ?????????
• ??????? ?? ????? ????????? . W3C .
• G. Klyne, C. Newman. RFC 3339. Date and Time on the Internet: Timestamps . IETF .

?? ?????? ????? ??????? ?????????? ??????? . ????? ????????? ??????????? ??? ????????? .