NOTICE ADVISORY TO GALILEO USERS (NAGU)	2016054
DATE GENERATED (UTC): 2016-12-02 08:20
	
NAGU TYPE: GENERAL
NAGU NUMBER: 2016054
NAGU SUBJECT: LEAP SECOND
NAGU REFERENCED TO: N/A
START DATE EVENT (UTC):	2016-12-31 23:59
END DATE EVENT (UTC): 2017-01-01 00:00
SATELLITE AFFECTED: ALL
	
EVENT DESCRIPTION: THE INTERNATIONAL EARTH ROTATION AND REFERENCE SYSTEMS SERVICE (IERS) HAS ANNOUNCED THE INTRODUCTION OF A LEAP SECOND TO OCCUR AT THE END OF DECEMBER 2016.

COORDINATED UNIVERSAL TIME (UTC) WILL SEQUENCE AS FOLLOWS:
     31 DEC 2016 23 HOURS 59 MINUTES 59 SECONDS
     31 DEC 2016 23 HOURS 59 MINUTES 60 SECONDS
     01 JAN 2017 00 HOURS 00 MINUTES 00 SECONDS

USERS ARE ADVISED THAT THE UTC DATA IN THE GALILEO NAVIGATION MESSAGE WILL CHANGE IN ACCORDANCE WITH OS SIS ICD (SECTION 5.1.7).

BEFORE THE LEAP SECOND
GST-UTC IS 17 (GST IS AHEAD OF UTC BY 17 SECONDS)

AFTER THE LEAP SECOND
GST-UTC WILL BE 18 (GST WILL BE AHEAD OF UTC BY 18 SECONDS)