Is NASA using Persian calendar ?

Question

The Persian calendar system is the most accurate one, as far as I know NASA needs very very very exact calculations so are they using Persian calendar?

At least, you can do a search and then call your self the only "CIVILIZED" people on this planet ! of course your new big damn lie (a.k.a. "the movie 300") proved that you're not LIAR !!! you civilized people ! ... anyway ...

for those who can open their eyes for facts :
COMPARE !!!
http://en.wikipedia.org/wiki/Gregorian_calendar#Calendar_seasonal_error
http://en.wikipedia.org/wiki/Persian_calendar#Seasonal_error

Answer 1

NASA does not use the Persian calendar. They use the Jet Propulsion Lab's DE405 ephemeris, which is accurate to a few microseconds.

Regardless of the accuracy of the Persian calendar, the Gregorian calendar is perfectly accurate also. There is no question, for example, what instant of time is meant by 2007 March 21, 00:07:00.000 UTC at Cape Canaveral Florida.

And for the Persian calendar: if the spring equinox happens at exactly noon, then when is the start of the new year?

Answer 2

NASA uses the SI unit seconds in time calculations.

If they need to write down when their next dentist appt is, they use the same type calendar I do.