[rj_crowder]

I have an Accu-Chek Aviva, I entered several readings but the times in GB are all off by about six hours. Anyone know a fix for this?

[indragill]

You probably have the time set wrong. I went to the Accu-Chek website and copied these instructions for you to set the time on your meter....
Your meter comes with the batteries already installed and a preset time and date. You may need to change the time to match your time zone or, if you live in a state that observes daylight saving time, to reflect the time change.

To change the time:
Press and release the On/Off button to turn the meter on. The flashing test strip symbol appears.

NOTE: If this is the first time your meter has been turned on, it will automatically enter the set-up mode, and "Set-up" and the hour will flash on the display. Skip to Step 3 to change the time or, if the date and time are correct, press and hold the On/Off button to exit the set-up mode.

To enter the set-up mode, press and hold the On/Off button for about four seconds. “Set-up” and the hour flash on the display.
Press and release the arrows to decrease or increase the hour. Press and hold the arrows to scroll faster.
Press and release the On/Off button to set the hour. The minutes flash.
Repeat steps 3 and 4 to set the minutes, AM/PM, month, day and year. The flashing field is the one you are changing.
Once you set the correct time and date, press and hold the On/Off button until the flashing test strip symbol appears.

Good luck!
Indra