# Returns a new ; DateTime objects will have time set to 0:00DateTime representing the start of the month (1st of the month; DateTime objects will have time set to 0:00)
# Returns a new Date/DateTime representing the start of the quarter (1st of january, april, july, october; DateTime objects will have time set to 0:00)
# Returns a new Date/DateTime representing the end of the quarter (last day of march, june, september, december; DateTime objects will have time set to 23:59:59)
# Returns a new ; DateTime objects will have time set to 0:00DateTime representing the start of the month (1st of the month; DateTime objects will have time set to 0:00)
# Returns a new Date/DateTime representing the start of the quarter (1st of january, april, july, october; DateTime objects will have time set to 0:00)
# Returns a new Date/DateTime representing the end of the quarter (last day of march, june, september, december; DateTime objects will have time set to 23:59:59)