Find the date that is n weeks away from a known date:

Number of weeks:	- Choose One -12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152
Beginning date:	- Date - 010203040506 070809101112 131415161718 192021222324 25262728293031
Result:

Calculate the number of weeks between two known dates:

Beginning date:	- Date - 010203040506 070809101112 131415161718 192021222324 25262728293031
Ending date:	- Date - 010203040506 070809101112 131415161718 192021222324 25262728293031
Result:

Find the date that occurs n weeks before a known date:

Number of weeks:	- Choose One -12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152
Ending date:	- Date - 010203040506 070809101112 131415161718 192021222324 25262728293031
Result: