Bill Payment Calendar Should All Be Automatically Calculated Under The “Date” Column

When a date is entered e.g 1/27/2007 The bill payment dates should all be automatically calculated under the “Date” column. Rules for the date

Rule1. e.g. 1 Month—the date should be 1 month after the date entered (as shown by the simple example 1/27/2007 one month is 2/27/2007 in the sheet)

Rule2 if the date entered is the last day of the month, the calculated date should also be the last day of the month provided it is a working day.
E.g 1/31/2007 one month is 2/28/2007. (provided 2/28 is working day)
2/28/2007 one month is 4/30/2007 (provided 4/30 is working day)

Rule3 If the calculated date based on rule1 and rule2 is a non-working day, the date is pushed back by 1 till it becomes a working day. e.g 1/27/2007 two month is 3/27/2007 if 3/27/2007 is Saturday it becomes 3/28/2007 which is a Sunday, another non-working day. So the output should be 3/29/2007

Rule4, under rule3, the date cannot be pushed to the next month. Instead, we push the date forward. In the previous example assume 3/29, 3/30 and 3/31 are all public holidays, by rule3, it will be finally pushed to 4/1. But this becomes another month. So we push forward instead to 3/26 which is Friday. The output is 3/26/2007

Definition of working dates (Monday to Friday excluding the holidays listed in the sheet).........