Group by Custom Date in Reports

May be too much specific question.
But if I have a date mentioned in specific table in numeric format like - 12 .

Can I display a chart for records from 12 to 11th of the next month . Likewise report will have sum of another value field for each segment of days (12th to 11th). ?

I don’t think it’s directly possible, but you could maybe do a workaround/cheat, whereby you create a field which adds/subtracts an offset to the date value, and then use this field in your report view, grouped by month. So everything that shows in the report in the month of January, is actually records from 12th Jan to 11th Feb , and so on.