Howdy philmacaulay!
There is not really an option to select different EOD times for different views. It looks to me like zengirl was likely on the right track, and evidently got that code to work. Clearly the snippet she posted here is not complete, it is missing things like a closing parentheses and such. Assuming you corrected those bits, did you paste that code in the right place? You would want to create a theme override for your week view and modify her idea to fit your needs.
Unfortunately theme overrides do require a bit of knowhow, they are not really a copy/paste scenario. You need to have a pretty solid understanding of PHP and WP, plus the theme API to successfully create an override. If you do not have the requisite knowledge, you might need to hire someone to make the customization. You can email [email protected] if you are interested in obtaining a list of developers who know all of the necessary APIs.
Does that make sense? Does it answer your question? Please let me know. Thank you!
– Brook