Pixhawk Mission log, Timestamp

Hello everyone,

We are using pixhawk 6x and survey camera ADTI.

The feedback of the camera capture which get stored in the mission log has a time difference of 18-19 seconds when compared with the timestamp of the feedback of the emlid PPK module for the same picture.

The GPS we are using here 3 which manages the time sync.

This delay is constant in all pixhawk.

Anyone know the reason for this issue ?