It doesn't surprise me. Timezones - and dates and time in general - are extremely complicated. Deceptively so. Although we interact with timezones, dates, and time every day, we don't think about layers of complexity and edge cases. More importantly, we don't practice them.
We have courses about compilers, databases, data structures, algorithms, cryptography. It's surprising we don't have courses about dates and time.
It's not surprising they didn't make an appearance in the academic world. They are utterly boring. Insanely complex, of course, but there's nothing that can be built upon. Everything in a CS curriculum is an extendable domain
True but often you need something to explain at a bit more of
an overview level. Intelisense helps when you know the object and
want to explore the methods.
It's surprising how poorly the situation with timezones is understood in the industry.