I'm sorry, but no.
Here is a pencil. Is it taxed in both A and B? Now, here's another pencil, but it was made from recycled wood. Is it also taxed the same way in both A and B? What about C, which is another one of the USA's 6000+ tax jurisdictions?
Wait... did that state just declare a tax-free weekend for school supplies (Texas does), so should that item no longer be taxed for Texas residents? Does the tax free weekend apply to both types of pencils?
Wait... A city in California just decided that pencils are dangerous if kids run with them, so they impose an extra sales tax to discourage unsafe writing practices. How are you expected to know about this local rule if you live several states away? Normally, rules of nexus would exempt you... unless you are using affiliates to help you sell pencils. Affiliates can trigger nexus. How can you know the local tax rules for every affiliate that signs up?
And, sorry... if you think timezones are simple, then you are way off base. If it is easy, then it is because so many people have dedicated their resources to provide the tools to make it easy. (https://www.timeanddate.com/time/dst/events.html, https://en.wikipedia.org/wiki/Tz_database) Sales tax is much, much more complex (9 time zones in the USA vs 6,000+ tax jurisdictions in the USA).