Is the precision of the US atomic clock affected by daylight savings time or leap years?

Answer 1

The atomic clocks keep Greenwich mean time. They use the natural frequencies of atoms to keep time. This natural timeing keeps the time displayed accurate

Leap year (and leap seconds sometimes) and other adjustments are made to the display of the clocks and has nothing to do with the time keeping but only the display.

Answer 2

I don't think it's affected by either. People adjust their clocks for daylight savings time through coordinated effort.

Atomic clocks are adjusted for leap years and other astronomical and geographical anomalies.

I remember reading a story that said the huge earthquake that created the tsunami last year (or so) was so strong that it shook the Earth and altered it's orbit. Atomic clocks had to be adjusted to account for this tiny shift.

Answer 3

Go Johnny Go...

The Cesium atom vibrates at a constant spedd and this is what powers atomic clocks. Time is a relavant thing which is why all scientic and most time measurements are Greenwich (england) or UCT or UT. The atom does not care if it is february for leap year. You set your atomic clock (new ones set themselves) and it stays correct, regardless of what leap year or daylight time. You can set it for EST and it maintain that time correctly even if the time is actually EDT.

Answer 4

No.