Current temperature in Washington United States of America (the) 9 °, Weather conditions:
The time shown on this site is set by an atomic clock via the NTP protocol. Currently synchronized with Washington United States of America (the) et Greenwich (UK), has a time difference of (UTC-05:00) Eastern Time (New York)
Time Zone America/New_York. Current offset (UTC-05:00) Eastern Time (New York)
International Atomic Time is a time scale based on the definition of the second using atomic clocks. It makes it possible to define the standard of time used everywhere in the world. The second was defined in 1967 during the 13th General Conference on Weights and Measures as being the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the cesium atom 133. On the site Heure Exacte you therefore have the exact atomic time, to the nearest thousandth of a second!