[Grammar] What time do you get off work today?

[kadioguy]

(In a question of the TOEIC listening test)

What time do you get off work today?
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1. The present simple is used; what does that mean?

2. How about What time will you get off work today?

I think the present simple expresses the action happens on a regular basis; however, "today" indicates a specific date. Is there a contradiction between them?
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(Update)

Can the following apply to my question?

(Quoted from the Practical English Usage 3rd ed.)

215.1

timetables etc: The summer term starts ...

We can sometimes use the simple present to talk about the future. This is common when we are talking about events which are part of a timetable, a regular schedule or something similar.

The summer term starts on April 10th.
What time does the bus arrive in Seattle?
My plane leaves at three o'clock.
Are you on duty next weekend?
The sun rises at 6.13 tomorrow.


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Will is also usually possible in these cases.
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(Source)

Note: this photo is from the answer.

 

[jutfrank]

Yes, this is the 'timetable' use. The person asking the question knows that the addressee has fixed hours of work, and this is what the asker is really asking about.

 

[Tdol]

You could use do you get simply for this day, though.

 

[kadioguy]

You could use do you get simply for this day, though.

Do you mean I could use "do you get" instead of "What time do you get off work today"?