Is it possible to use a calculated or relative date range in Zoho Desk reports? i.e. say "Current time" - 28 days.

I'm attempting to report on tickets that have had no activity for a defined period e.g. Dormant tickets would be any active ticker (i.e. not closed) where the last modified time is between 7 days and 28 days from now. Aged tickets would be those where the last modified time is greater than 28 days from now.