I’ve just noticed that HDFC’s Interest rates have changed recently. They offer 7% for a one year deposit, but a special rate applies for a deposit of 1 year and 15 days: 8% per year compounded quarterly.
This seems to apply only for deposits from 1 year 15 days to 1 year 16 days. If you take a deposit of lesser days or more days (1 year 14 days or 1 year 17 days you get only 7%!)