The Julian day number (JDN) or Julian day is the integer number of days that have elapsed since the initial epoch defined as noon Universal Time (UT) Monday, January 1, 4713 BC in the proleptic Julian calendar . That noon-to-noon day is counted as Julian day 0. Thus the multiples of 7 are Mondays. Negative values can also be used, although those predate all recorded history. Now at , 30, 2018 (UTC) the JDN is . The remainder of this value divided by 7 is , an integer expression for the day of the week with 0 representing Monday.