Your #2 is not good. I live in London, UK and when asking "What's the time in London", I mean London, UK.
You may ask why do I need to specify London at all? Here's one of the possible scenarios, sounding very normal as human communication goes:
(I'm in London wanting to phone my relatives in Moscow, which is several time zones away. I don't know the current time in either Moscow or London, and I don't know what's the time difference between the two as not all countries observe DST)
Me: "Hey Siri, what's the time in Moscow?"
Siri: "It's 10:35PM in Moscow, Russia"
Me (thinking about whether I'll finish speaking in time for dinner): "Hey Siri, what's the time in London?"
Siri: "It's 8:35PM in London, UK"
Asking "What's the time?" instead of "What's the time in London?" sounds very unnatural here.
Fair enough, although I do see it as a not so common case. But maybe it is more common than people wanting to know the time in London, Canada while being in London, UK.
You may ask why do I need to specify London at all? Here's one of the possible scenarios, sounding very normal as human communication goes:
(I'm in London wanting to phone my relatives in Moscow, which is several time zones away. I don't know the current time in either Moscow or London, and I don't know what's the time difference between the two as not all countries observe DST)
Me: "Hey Siri, what's the time in Moscow?"
Siri: "It's 10:35PM in Moscow, Russia"
Me (thinking about whether I'll finish speaking in time for dinner): "Hey Siri, what's the time in London?"
Siri: "It's 8:35PM in London, UK"
Asking "What's the time?" instead of "What's the time in London?" sounds very unnatural here.