I'm very confused about tenses. I have examples in two different situations here.
Situation 1: I went to New York two months ago and was talking to someone about it.
A. This is the first time I've been to New York.
B. That was the first time I'd been to New York.
Which is correct in a daily conversation?
Situation 2: I'm going to New York next month and talking to someone.
A. This will be the first time I've been to New York.
B. This is the first time I've been to New York.
C. This will be the first time I go to New York.
Which sentence is appropriate?
According to a grammar article I've read before, I think it says that I can use this sentence in both cases:
This is the first time I've been to New York.
But I'm not sure if this is really so. So I'd like to know which tense I should use in each case. Could you explain it?