NOTICE ADVISORY TO GALILEO USERS (NAGU) 2019015 DATE GENERATED (UTC): 2019-04-24 20:57 NAGU TYPE: USABLE NAGU NUMBER: 2019015 NAGU SUBJECT: USABLE AS FROM 2019-04-24 NAGU REFERENCED TO: 2019014 START DATE EVENT (UTC): 2019-04-24 15:51 END DATE EVENT (UTC): N/A SATELLITE AFFECTED: GSAT0218 SPACE VEHICLE ID: 31 SIGNAL(S) AFFECTED: ALL EVENT DESCRIPTION: GALILEO SATELLITE GSAT0218 (ALL SIGNALS) IS USABLE SINCE/AS OF 2019-04-24 BEGINNING 15:51 UTC. PAYLOAD ON PHM CLOCK. GALILEO SATELLITE GSAT0218 (ALL SIGNALS) WAS UNAVAILABLE FROM 2019-04-16 BEGINNING 01:30 UTC.