Sentence question

One of the best things that happened to me in Florida was meeting this guy.

Thank you. Just curious, is it possible to say 'that has happend'?

So, would has be also possible? I think yes, but would like your confirmation.

Not if you are referring to, say, one particular vacation you spent in Florida.

But in that case I am not referring to a particular time. So would it be possible in that sentence?

One of the best things that has happened to me was meeting this guy in Florida.

Can I exclude 'has' as well? Would it be possible without it?

Thanks. But would it also be possible without 'has'?
Because has makes the sentence present perfect and without it, it is simple past. Am I correct?

AnonymousCan I exclude 'has' as well? Would it be possible without it?

See the earlier post. "Has" is not there.

ozzourtiOne of the best things that happened to me in Florida was meeting this guy.

AnonymousBecause has makes the sentence present perfect and without it, it is simple past. Am I correct?

Not quite right. There are two clauses in the sentence. The main clause is simple past. Here is the main clause:
One of the best things was meeting this guy in Florida.

The tense of the verb in the dependent clause (underlined) is presen