dateTimeShort(){
# Desc: Timestamp without separators (YYYYmmddTHHMMSS+zzzz)
# Usage: dateTimeShort
+ # Version 1.0.0
# Output: stdout: timestamp (ISO-8601, no separators)
local TIME_CURRENT TIME_CURRENT_SHORT
TIME_CURRENT="$(date --iso-8601=seconds)" ; # Produce `date`-parsable current timestamp with resolution of 1 second.