How to properly set the clock in the receiver?

Receivers Ariva xx0 series not have a built-in clock. Current time downloaded and updated from the satellite. To properly set the time in the receiver must specify an offset from Greenwich Mean Time.

And so for the Polish in the menu -> System -> Time setting, enable set use GMT and GMT for Polish should be set to UTC + 01: 00.

Remember that during the summer daylight saving time option must be set to turn on.