Assuring start-date is never before 1980-01-01 (#52)

This is an issue that may happen when users select start dates beyond
the range defined for this dataset.

Reported-by: Wouter Knoben <wouter.knoben@ucalgary.ca>

Signed-off-by: Kasra Keshavarz <kasra.keshavarz1@ucalgary.ca>

Author: kasra-keshavarz

scripts/eccc-rdrs/rdrs.sh

@@ -249,6 +249,11 @@ endDateInt=$(date --date="$endDate" +"%Y%m%d")
 if [[ $endDateInt -gt "20181230" ]]; then
   endDate="2018-12-30T23:00:00"
 fi
+# Assure the start-date is not before 1980-01-01
+startDateInt=$(date --date="$startDate" +"%Y%m%d")
+if [[ $startDateInt -lt "19800101" ]]; then
+  startDate="1980-01-01T12:00:00"
+fi
 
 # assign proper variables for dates
 startYear=$(date --date="$startDate" +"%Y") # start year (first folder)