Read the dictionary definition of due. All definitions for this word.
1. that which is deserved or owed
1. give the devil his due
2. a payment that is due (e.g., as the price of membership)
1. the society dropped him for non-payment of dues
3. owed and payable immediately or on demand
1. payment is due
4. suitable to or expected in the circumstances
1. all due respect
2. due cause to honor them
3. a long due promotion
4. in due course
5. due esteem
6. exercising due care
5. capable of being assigned or credited to
1. punctuation errors ascribable to careless proofreading
2. the cancellation of the concert was due to the rain
3. the oversight was not imputable to him
6. scheduled to arrive
1. the train is due in 15 minutes
7. directly or exactly; straight
1. went due North