NOTICE ADVISORY TO GALILEO USERS (NAGU) 2017047 DATE GENERATED (UTC): 2017-12-15 15:10 NAGU TYPE: GENERAL NAGU NUMBER: 2017047 NAGU SUBJECT: LAUNCH OF GSAT0215, GSAT0216, GSAT0217 AND GSAT0218 NAGU REFERENCED TO: N/A START DATE EVENT (UTC): 2017-12-12 18:36 END DATE EVENT (UTC): N/A SATELLITE AFFECTED: GSAT0215, GSAT0216, GSAT0217, GSAT0218 EVENT DESCRIPTION: GALILEO SATELLITES GSAT0215 (SVID 21), GSAT0216 (SVID 25), GSAT0217 (SVID 27) AND GSAT0218 (SVID 31) WERE LAUNCHED ON 2017-12-12 AT 18:36 UTC. GSAT0215, GSAT0216, GSAT0217 AND GSAT0218 ARE PLANNED TO BE POSITIONED IN SLOTS A03, A07, A04 AND A01 OF THE CONSTELLATION. USERS WILL BE ADVISED OF AVAILABILITY OF SIGNALS FOLLOWING COMPLETION OF COMMISSIONING ACTIVITIES.