Create calendar on basis of table with items without dates but with deadlines

Hi
I would like to create a calendar with dates on the basis of a table of say 30 items, each with a specific deadline, for example: 10 days before quarter end, or: each month end.
I can make calendars when items dates are known, but I want to create a calendar for months/years to go forward, based on the static table.
Any suggestions?
Thanks

It would help if you attached a sample Excel workbook, showing what data you have and how you would like it to look (compile this part manually).

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Hope this helps.

Pete