NOAA-18, All Instruments,Adjust Clock, Implementation Date 13 March 2007- Issued: Date issued 15 March 2007; time issued 14:30 UTC UTC

Adjust clock (subtract 1000 msecs) to correct clock drift

Date/Time(UTC) Message Issued:
same as in the SUBJECT line above in the form - day month year/HHMM UTC

Satellite(s) Involved:

Instrument(s) Involved:
All Instruments

Product(s) Involved/Affected:
All Products

Date/Time(UTC) of Initial Implementation:
13 March 2007 2200 UTC

Details/Specifics of Change:

On March 13, around 2200 UTC, SOCC performed a spacecraft command clock update to adjust for clock drift. The clock error had accumulated over the past 13 months and was drifting out of the desired range. A notice should have come out of our office to all users so they would be aware that this action was going to happen. Somehow it was overlooked. Please accept my apology for any problem this oversight may have presented you.

The procedure was done to subtract 1000 msecs from NOAA-18 command clocks (both CPU sides) to adjust for clock drift over the last 13 months.

Contact Person(s) Name/Email/Phone Number for Questions:
Emily Harrod

Cecil A. Paris,PMP
Physical Scientist

Web site(s) that contain other relevant information (where applicable): - History of level 1B notices - All user notices - SOCC polar satellites status - SOCC morning reports

* Emily D. Harrod
* Product Systems Branch
* Pre-Product Processing Group
* E/SP13, Federal Building #4, room 0318
* 5200 Auth Road
* Suitland, Maryland 20746-4304
* voice 301-457-5247 ext 117
* fax 301-457-5199
* email