B&H Photo Video famously won't accept online orders on Shabbat (in the time zone of the business in New York). Not just not fulfil the orders then, but not allow users to place them, either. I don't know how they decided to use only the time zone of the company and not the time zone of the person placing the order, and indeed where they see the desecration(s) of the sabbath as occurring if they didn't enforce this policy. Interestingly, their web site is still online at that time; it's only the online ordering feature that gets disabled.