@BrianBulla Although I am not knowledgeable in VertiGIS Mobile application; the typical mobile app would work off a feature service. There are many configuration parameters at the feature service, one of them being Date/Time.
In the Publish Map Service pane, on the Configuration tab, click the Configure Parameters, under Date Fields, click the Time zone of the data drop-down arrow and choose the time zone in which your date values are stored. Specifying the time zone in which the dates are recorded allows date and time values to be converted correctly when users interact with the service.
You only need to choose a time zone if your map contains layers with date fields. If you don't specify a time zone, the dates are assumed to be stored in UTC.
Reference: Configure a map service
Ayan Palit | Principal Consultant Esri