![]() You should note that any features which are dependent upon date/time information could be potentially affected by the incorrect date caused by this rollover. The 2019 GPS Week Rollover would have a potential effect upon GPS receivers (including GPS sensors and GPS receivers embedded within MFDs, chartplotting products, AIS receivers, and VHF radios). This in turn will dictate the date error displayed. (Date of Launch + 19.7yrs = Rollover date). Therefore, the date of launch / manufacture of the GPS chip set built into the GPS Receiver will dictate the date the GPS will roll over. ![]() ![]() The GPS Satellites transmit a week count number from 0 to 1023 which relates to the last Rollover date of 1999 to the next Rollover date of 6th April 2019, (19.7yrs), in which it will once again return to zero and start the count again.Īll GPS Receivers use this week count number to calculate the current UTC date. The GPS Satellite system week counter reaches its count limit of 1023 and will be set to zero on 6th April 2019. ![]()
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