Users of GPS receivers are advised of potential problems due to GPS week counter roll over on 06 apr 19

Original warning text

POTENTIAL PROBLEMS FOR USERS OF GPS RECEIVERS.
1. USERS OF GPS RECEIVERS ARE ADVISED OF POTENTIAL
   PROBLEMS DUE TO GPS WEEK COUNTER ROLL OVER ON
   06 APR 19.
2. THE GPS SYSTEM TRANSMITS TIME TO GPS RECEIVERS
   USING A FORMAT OF TIME AND WEEKS AFTER THE START
   DATE OF 06 JAN 80. THE DATA FIELD IN THE NAVIGATIONAL
   MESSAGE SENT BY GPS SATELLITES CONTAINING THE NUMBER
   OF WEEKS AFTER THE START DATE IS LIMITED TO A MAXIMUM
   OF 1023 WEEKS.  WHEN THE GPS SYSTEM REACHES WEEK 1024,
   THE SYSTEM WILL REVERT BACK TO WEEK ZERO.
3. SOME GPS RECEIVERS ARE KNOWN TO BE UNABLE TO MAKE
   THE TRANSITION FROM WEEK 1023 TO 1024. IF THE GPS
   RECEIVER IS OUTDATED OR LACKS PROPER UPDATES,
   THE RECEIVER WILL REVERT TO READING THE WEEK ZERO
   AS AUGUST 1999. DURING THIS TIME THE INTERNAL CLOCKS OF
   THESE GPS RECEIVERS WILL EXPERIENCE A LACK OF ABSOLUTE
   REFERENCE AND MAY GIVE THE WRONG TIME AND POSITION OR
   MAY LOCK UP PERMANENTLY.
4. SOME OF THESE GPS RECEIVERS ARE REPAIRABLE WITH
   UPGRADES AND OTHERS WILL BECOME UNUSABLE. USERS ARE
   ADVISED TO CHECK WITH THEIR GPS MANUFACTURER REGARDING
   THE STATUS OF THEIR RECEIVER.
5. FOR FURTHER INFORMATION SEE:
   A. GPS WEEK ROLL OVER ISSUE
      www.gps.gov/cgsic/meetings/2017/powers.pdf.
   B. TIMING CRITICALITY AND GPS 1024 WEEK ROLLOVER
      www.gps.gov/governance/advisory/meetings
      SELECT NOVEMBER 2017 AND THEN TIMING CRITICALITY AND
      NOTE ON "GPS WEEK-ROLL-OVER"
   C. GLOBAL POSITIONING SYSTEMS DIRECTORATE,
      SYSTEMS ENGINEERING AND INTEGRATION INTERFACE
      SPECIFICATION IS-GPS-200,
      www.gps.gov/technical/icwg/IS-GPS-200J.pdf.
6. FAILURE TO VERIFY YOUR GPS RECEIVER COULD LEAD
   TO SERIOUS NAVIGATIONAL PROBLEMS PLACING LIVES
   AND PROPERTY AT RISK.