Map your own season from last year’s books
Every business has a different pattern. Retail food and some F&B outlets see strong Ramadan and Eid trade; corporate events, construction site activity and many professional services slow. Tourism-led businesses may be busy in winter and quiet in the summer heat. Do not rely on general assumptions: pull monthly revenue, receipts and payments for the last two years and chart them.
Remember that Ramadan moves about eleven days earlier each year in the Gregorian calendar. A pattern from three years ago may have fallen in a different quarter, so line the data up by event, not by month.