_NAME_
get_first_date_of_archived_data

_PROTOTYPE_
date = get_first_date_of_archived_data(structName)

_SHORT-DESCRIPTION_
Determine the date of the first data archived for an instrument and data type

_DESCRIPTION_
get_first_date_of_archived_data is used to determine what the first day of
a particular type of data is in the archive for a particular instrument
(CRIS or SIS).

_SHORT-CODE-SAMPLE_
structToUse = {L1CrisCommandEcho}
structName = get_struct_name_from_struct(structToUse)
date = get_first_date_of_archived_data(structName)
print, 'Date of initial day of archived data is ', date

_INPUT_
* structName is the name of the data type you are interested in.

_OUTPUT_
* An {AceTime} struct filled with the values corresponding to the
first date the data is available for.