As I am at least an advanced JavaScript programmer and I have 38 years of programming overall, I am sure I can do this. Indeed, I wrote a good part of the code in my head as I read your spec. What I will do is provide you with a JavaScript function that will compute and return the cut-off time as a string that will be ready to display as is. If the site has, or can have, a div or p tag with an ID that will be the place on the page that the time will be displayed, the function can also insert the string directly into the page. As an extra feature, if you want, a timer could be set up that would trigger the function at, for example, one minute intervals, so that the cut-off time is always accurate. I would like to send you my actual resume so you get a better idea of my experience and skills.