GPS week rollover
Knowledge Base - FAQ
Can the Qg 2 handle GPS week rollover?
On April 6, 2019 at 23:59:42 UTC, the GPS week number will reset to zero. All Qulsar products containing a GPS receiver (Qg 2, M88EVB with GNSS add-on board and the M6x evaluation kit) have been verified to handle this event without any problems.
You can read more about this event and the background here: https://www.gps.gov/