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

NAGU TYPE: GENERAL (HAS UNP_UNUFN)
NAGU NUMBER: YYYYNNN
NAGU SUBJECT: HAS SERVICE UNAVAILABLE FROM YYYY-MM-DD UNTIL FURTHER NOTICE
NAGU REFERENCED TO: N/A
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 ARE UNAVAILABLE SINCE YYYY-MM-DD BEGINNING hh:mm UTC UNTIL FURTHER NOTICE.