I've been monitoring this for a long time, and can say for sure: system set release time for Netflix shows is 4 hrs. late. 99% of the shows are being released @8:00 GMT. So if the system is offering countdown in hours, it may as well calculate it correctly :)
The same is also true for Hulu, but I'm not 100% sure about their release time.
david wrote: Global webchannels intentionally don't have an airtime; so countdown won't be exact indeed.
They don't have an airtime, but Netflix releases their new stuff at 12 midnight for California, where it's headquartered... so if there's a definite time they release stuff, and not just whenever they feel like it in that 24 hour period, isn't that kind of an airtime?
Netflix shows are released at 0:01 pacific time. They can't released before a minute after midnight between thursday and friday for their originals (i think they're opening new days). So GMT would be 8:01.