If iGS130 / iGS20E shows incorrect time,pls try the following tips:

• Relocate GPS signal.
• Set the device to correct time zone.

For More details, you may refer to the following article.

Locates GPS Signal and Set Time Zone for iGS130/ iGS20E

Tips for locaiting GPS signal:

• Stay outdoors.
• Keep stationary.

Tips for Setting the time zone:

• If you are loacted in China, when ever you set the time zone, pls set the value as +8:00.

      Then the time will be automatically calibrated to the local real time, like 10:00.

List of time zones by country:

https://en.wikipedia.org/wiki/List_of_time_zones_by_country