Anniversary of the recurring payments. For Weekly and Fortnightly payments this will be the day of the week (1 - Monday, 2 - Tuesday, 3 - Wednesday, 4 - Thursday, 5 - Friday) For Monthly this will be the day of the month. If the day of the month is greater then 28, and the month is shorter then the anniversary this date will be moved forward to the nearest possible date (i.e. a payment for the 31st will fall on the 30th for monthly like September etc).