Module constant

DAY_IN_LEAP_YEAR DAY_IN_WEEK DAY_IN_YEAR HOUR_IN_DAY HOUR_IN_HALF_DAY HOUR_IN_WEEK MILLI_IN_DAY MILLI_IN_HOUR MILLI_IN_MINUTE MILLI_IN_SECOND MILLI_IN_WEEK MINUTE_IN_DAY MINUTE_IN_HOUR MINUTE_IN_WEEK SECOND_IN_DAY SECOND_IN_HOUR SECOND_IN_MINUTE SECOND_IN_WEEK TIME_BASE