Scope this out:
Here's a simple way to do this with AppleScript:
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# ISO-Date of each of 14 days past theDate.
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set theDate to "5/4/2015 11:30"
set theDate to date theDate
set _collate to {}
repeat 14 times
set theDate to (theDate + (1 * days))
set end of _collate to theDate as «class isot» as string
end repeat
set AppleScript's text item delimiters to tab
set the clipboard to _collate as text
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-Chris