Attributive clause or adverbial clause?

Both where and when can be replaced by that, and they seem to modify the nouns place and Sunday, respectively.

To me the second sentence seems a kind of cleft sentence.
I met with Tom (on) Sunday
-> It was Sunday when/that I met with Tom

But maybe I am wrong as usual

paco

I find "the place where they fought over" odd.

MrP

I don't think we can replace where and when with "that", only in this way "It is in the very place that the anti-Japanese soldiers fought over sixty years ago." "It was on Sunday that I met with Tom" can we use "that". Right?

Strictly speaking "It was Sunday when I met with Tom" may be grammatically wrong. But many native speakers prefer this to the grammatical cleft sentence. Google will give:
"It was on Sunday that I …" 292
"It was Sunday when I …" 784
I don't think this when clause is an adjective clause. If it is a usual adjective clause the sentence should be like "It was the Sunday when

MrPedantic
I find "the place where they fought over" odd.

MrP

I think I misunderstood "over" in the original.

You can say:

1. It is the very place where the anti-Japanese soldiers fought, over sixty years ago.

or

2. It is the very place that the anti-Japanese soldiers fought over, sixty years ago.

Adjective clause is always to midify noun . So as long as those two sentences are absolutely modifies noun, (the place/ the day) so they are all adjective clause.

"what is the truth? the truth is sth you make"
so let's make a new truth

1font00Hi, I'm Naagii from Mongolia. So I really have to know an adverbial clause. Do you know about it? Please tell me about some site.02font0-

0 My thought is that they are atrributive because they relate to the nouns, rather than the verbs. An attribute is something a person or thing possesses. These clauses relate to 'place' and 'Sunday'. 0-