NOTICE ADVISORY TO GALILEO USERS (NAGU) YYYYNNN
DATE GENERATED (UTC): YYYY-MM-DD hh:mm

NAGU TYPE: GENERAL (HAS USABLE)
NAGU NUMBER: YYYYNNN
NAGU SUBJECT: HAS SERVICE AVAILABLE AS FROM YYYY-MM-DD 
NAGU REFERENCED TO: YYYYRRR
START DATE EVENT (UTC): YYYY-MM-DD hh:mm
END DATE EVENT (UTC): N/A
SATELLITE AFFECTED: ALL

EVENT DESCRIPTION: USERS ARE ADVISED THAT HAS SERVICE IS AVAILABLE SINCE/AS OF YYYY-MM-DD BEGINNING hh:mm UTC. HAS SERVICE WAS UNAVAILABLE FROM YYYY-MM-DD BEGINNING hh:mm UTC.