Wrong Time in Time/Date Stamp ?!

[JN]

i am using the nmea data logger enterprise. now i got a new problem.i enabled the time and date stamp for recording logfiles.
as u can see on the screenshot i made, there is a difference of 1 second between time stamp and the time receiving from gps logger in the gprmc and gpgga sentences.

any idea to fix this ?

[Arthur Grasin]

Date and time in gprmc and gpgga sentences come from a satellite. This value will never equal to PC date and time.