The Date Picker in the Axsy Mobile App allows users to select a date that falls within 100 years previously to the current date and 10 years after the current date.

If the current year is 2020, we only allow a date range from January 1st 1920 to December 31st 2030. 

It is possible to set a default date value outside of this range in the Designer, however, when the user edits the Date Element in the Axsy Mobile App, the user will only be permitted to select a value within the range stated above. 

For more information on default values, please see this article: Default, Read-only, and Invisible Elements