There is no specific word in common English. (Fiction writers may have invented words not in wide use). In particular, proposed answers "moment" and "instant" do not answer the question.
This can be seen by imagining asking an aircraft, lifeboat, or someone who is lost in fog on a mountain, but has GPS, or even someone in an imaginary landscape such as VR or a hallucination, "what is your position?" This would be completely common understood English.
But you would not ask someone confused about when it is, or somehow "lost in time", or in a VR or hallucination, whose personal impression was sought, "What is your moment?" in ordinary English, and there is no phrase that does ask this in one word, that I know of. You just wouldn't.
What you might ask is, "When is it, where you are" or similar.
Speculatively, the reason we have one word but not the other, is because we don't tend to get lost in time, or have to report our current chronolocation, whereas we frequently have to report our spatial location.
When someones location in time is sought, as far as we know (and relativity and microseconds difference aside), the answer for all humans on Earth has always been "now", or "the same as for you", so in practice, the question which is common for space, never usually arises about time, nor was there a need for a word like this to emerge.