[Sis-ams] Time Tag - CCSDS Time

[Ray, Timothy J. (GSFC-583.0)]

Sounds good Pat.

 

Just out of curiosity, is there some advantage to using the older epoch?

 

Tim

 

 

 

________________________________

From: sis-ams-bounces at mailman.ccsds.org
[mailto:sis-ams-bounces at mailman.ccsds.org] On Behalf Of Donahue, Pat
Sent: Wednesday, August 20, 2008 12:35 PM
To: sis-ams at mailman.ccsds.org
Subject: [Sis-ams] Time Tag - CCSDS Time

 

For interoperability sake, just like we have agreed to an "Unsegmented"
CCSDS format, I suggest that we also agree to all use the 1958 epoch as
our basis, and 4 bytes of course time (since you need that many bytes to
properly contain the number of seconds since Jan 1, 1958).

 

By the way, if you are working with the Jan 1, 1970 epoch in Unix just
add 378691200 and you will have the number of seconds since Jan 1, 1958.
Correct me if I am wrong.

 

Patrick Donahue
(256) 544-5943 office
(256) 721-0726 home
(256) 682-9753 cell

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