How many hours per annual will I work?

[sausagesAretheboys]

I have the opportunity of a new job, term time only.
I will be working 24 hrs per week on a Tues, Thurs and Fri. So how many hours will I work annually?

key-
yellow dates - pupil holidays
pink dates - bank holidays
purple dates - staff training, I won’t work these.
Thanks

I counted 115 days so I make it (assuming 24h a week is equally divided between the days that is 8h a day) 920h over the year if I counted correctly.

Term time is 39 weeks

Yes 39 weeks. However on the weeks where there is pupil holiday or bank holiday on my working days how do I calculate what hours I would work that week? Would it just be my normal working days?