Why 32 days?

[alden]

How long should you extend AM6 beyond the 32 days if you happen to miss certain number of days or hours listening to it. What's the formula if you miss, say, 3 days of AM6 within 32 days? How about if you've had, say, 3 days when you were able to listen for only 3 hrs, 5 hrs and 7 hrs respectively instead of the minimum of 8 hrs?