IERS Rapid Service / Prediction Center
U.S. Naval Observatory

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U.S. Naval Observatory

IERS Earth Orientation Centre

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Earth Orientation Matrix Calculator

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Year
Month
Day
Hour
Minute
Second
Enter a start date and time (UTC):
Enter a stop date and time (UTC):
number of desired intervals:
Include selected input variations:
The default output is the terrestrial-to-celestial transformation.
Select additional intermediate matrix output:
Select additional intermediate matrix output:
Output Format:
EOP Input File MJD of desired finals2000A.daily: (If no MJD is provided, the most recent finals2000A.data file will be used)

Additional information about the matrix calculator, including leap second considerations, validation processes, and a concatonation utility.

Distribution Statement A. Approved for public release: distribution unlimited.