1. What time is it?

2. Do you know what time it is?

3. Do you have the time?

4. What’s the time?

5. Can you tell me what time it is?

6. How much more time do we have?

Time: start and finish

1. What time does the class start?

2. Do you know what time the class starts?

3. When does this begin?

4. What time do you have to be there?

5. By what time do you have to arrive?

6. What time does it end?

7. What time is this over? What time is this class over?

8. When does this end?

9. When do you get out of class? work?

10. What time are you through?  

11. What time are you finished?

12. What time are you done?

Length of Time

1. How long does it last?

2. How long will this take?

3. How much time will this take?

4. What are we looking at for time? (idiomatic)

5. How long will this be from start to finish?

6. How long will you be there?