Return Date of Next Ocurrance of Day Number

[SiRCYRO]

I need a formula to return the next occurrence of day of the month.

As well it needs to be at least two weeks after the original date, but can be the date that is exactly two weeks after the original date. I've been working with a forumla:

=IF(DAY(A1+14)=B1,A1+14,DATE(YEAR(A1+14),MONTH(A1+14)+1,B1))

A1=3/18/13
B1= Drop down List (1 or 15 in C1:C2)

ie. Find the next 1st of the month.
Original Date: 3/18/13
Two Weeks After: 4/1/13

Since it's also the next 1st, it returns 4/1/13

ie. Find the next 15th of the month.
Original Date: 3/18/13
Two Weeks After: 4/1/13

Should return 4/15/13, but is returning 5/15/13, because A1+14 in that case is already in the next month. I could start nesting more IF statements, but that would get messy considering this is already part of a larger formula.

Is there any way I can accomplish this cleaner without nesting more IFs?

[martindwilson]

so next first after 28th jan is 1st march?

=eomonth(A1+14,0)+1

[JBeaucaire]

If the original date is in A1, then:

Next 1st: =EOMONTH($A1, --NOT(EOMONTH($A1, 0)+1-$A1>=14))+1
Next 15th: =EOMONTH($A1, --NOT(EOMONTH($A1, 0)+15-$A1>=14))+15

[JBeaucaire]

Martin's right, it is easier than that...

Next 1st: =EOMONTH($A1+13, 0)+1 (martin's formula)
Next 15th: =EOMONTH($A1-1, 0)+15

[martindwilson]

ah but i added 14 and was having trouble working out what was wrong god call jb

[SiRCYRO]

Thanks, works like a charm! I was using EOMONTH() before and it worked about 95% of the time. I've tested yours and it seems to work perfectly, at least where my implementation went wrong.

If I wanted to accomplish the same thing except without adding the two weeks?

[JBeaucaire]

To get the next 1st and 15th regardless:

Next 1st: =EOMONTH($A1, 0)+1
Next 15th: =EOMONTH($A1-14, 0)+15


If that takes care of your original query, please select Thread Tools from the menu above and mark the thread as solved. Thanks.

[SiRCYRO]

That almost works, except if the date is the 1st or 15th, it should return that date. ie. 1/1/13 should return 1/1/13 not 2/1/13.

Thanks.

[JBeaucaire]

So tweak the $A1 value. for the first, probably $A1-1, for the 15th probably $A1-15. Play around with it.

[SiRCYRO]

I found a way to make it work, I had an error elsewhere in my calculation. Appreciate all the help! Thank you.