Convert 12-hour or 24-hour clock time formats to valid date strings.
Example: '1:32PM' => 'Mon Feb 13 2017 13:32 GMT+0000 (WET)'

@param {string} - the clock time you want to convert to a date.
@returns {string|undefined}
function shortTimeToDateString(shortTime) {
	// valid 24-hour string 00:00
	var reg24 = /^[0-9]{2}:[0-9]{2}(:[0-9]{2})?$/;

	// valid 12-hour strings: '0:00AM' || '0:00 AM' || '00:00PM' || '00:00 PM' || '00:00:00 AM' || '00:00:00AM'
	var reg12 = /^[0-9]{1,2}:[0-9]{2}(:[0-9]{2})?\s?(AM|PM)$/i;

	if (reg24.test(shortTime)) {
		return twentyFourHourTimeToDateString(shortTime);
	}

	if (reg12.test(shortTime)) {
		return twentyFourHourTimeToDateString(twelveTwentyfour(shortTime));
	}
}