samanvit saarvatrik samay
samanvit saarvatrik samay (sasas) (Coordinated Universal Time) vishv ke samay ka praathamik maanak hai jiske dvaara vishvabhar mein ghadiyaaain evam samay niyantrit kiye jaate hain. yeh greenavich maadhya samay (GMT) ke bahut saare anuvatiyon (successors) mein se ek hai. saadhaaran kaaryon ki drushti se samanvit saarvatrik samay aur greenavich maadhya samay ek hi hain, kintu greenavich maadhya samay ab vaigyaanik samudaaya dvaara parishuddhata poorvak (precisely) paribhaashit naheen kiya jaata hai.
antarraashtreeya paramaanvik samay(TAI) aniyamit antaraalon par jode gaye loan saikind sahit hai. yeh loan saikind pॄthvi ki dheemi hoti gati ke kaaran jode jaate hain. inse UTC ki UT1 se sameepata bani rahati hai. UT1 ausat saur samay hai, jo ki greenavich ki saahi vedhashaala mein dekha jaata hai.
UTC aur UT1 ke beech ka antar 0.9 s se adhik naheen ho paata, ataev yadi uchch parishuddhata aavashyak na ho, to ek saamaanya tarm vishvavyaapi samay ya yunivrsal time, prayog ki ja sakti hai.
naimittik prayogon hetu, greenavich maanak samay (GMT) bhi UTC aur UT1 samaan hi hota hai. sanshaya mitaane hetu saamaayat: savis (UTC) hi prayog hota hai, GMT ke prayog se bacha jaata hai.
| udaharan: mangalvaar, 2016-06-14 04:03 UTC yeh samay savis (UTC) mein hai, jab yeh panna antim baar adyatan hua tha. |
anukram
laghuroop
| udgam | laghuroop |
|---|---|
| bhaarateeya | savis (samanvayit vishvavyaapi samay) |
| angreji | CUT (coordinated universal time) |
| fraanseesi | TUC (temps universel coordonné) |
| ubhayasammat | UTC (universal time, coordinated) |
pustak sandarbh
- Allan, David W., Neil Ashby, Clifford C. Hodge: The Science of Timekeeping. Hewlett Packard Application Note 1289, 1997.
- ITU-R Recommendation TF.460-4: Standard-frequency and time-signal emissions. International Telecommunication Union. (Annex I of this document contains the official definition of UTC.)
- McCarthy, Dennis D.: "Astronomical Time". Proc. IEEE, Vol. 79, No. 7, July 1991, pp. 915–920.
- Nelson, McCarthy, et al.: "The leap second: its history and possible future"peedeeऍf (381 KiB), Metrologia, Vol. 38, pp. 509–529, 2001.
- Seidelman, P.K. (ed). Explanatory Supplement to the Astronomical Almanac. Sausalito, CA: University Science Books. 1992.
sandarbh
baahari kadiyaan
- Bureau International des Poids et Mesures UTC/TAI Time Server
- The official U.S. time in UTC zone using Java.
- World Time Server – any location, any time
- thetimeNOW – Current time in all time zones
- United States Naval Observatory – What is Universal Time?
- International Earth Rotation Service Leap Second Updates
- W3C Specification about UTC Date and Time and IETF Internet standard RFC 3339, based on ISO 8601
- Zulu Time
- Hong Kong Time by Hong Kong Observatory
- Alpha to Zulu time zones
- Definition of Coordinated Universal Time in German law – ZeitG §a1 (3)
- The Science of Timekeeping -- by David W. Allan of Allan variance fame
saaaincha:Time Topics saaaincha:Time measurement and standards