Tanýþtýðýmýz when we met, would this be correct.

 maybe

taniþtiðmizde

Saðol Deli  

Just a small addition - another possible way is to use "zaman" (of course as a separate word) in place of "-de/-da" suffix:

Tanýþtýðýmýz zaman.

A short example, thanks to google:

Onunla tanýþtýðýmýz zaman ben 14 yaþýndaydým.

When I met him/her (literally: when we met with him), I was 14 (years old).

verb is "tanýþmak"

so,

when we met: tanýþtýðýmýzda

or tanýþtýðýmýz zaman

not directly related to this but a little advice, which I use when I am not sure when using a phrase in English: type the thing you wrote in google and check if it exits

but pay attention that sometimes you can also find results without turkish charachters:

i.e. the correct form is "tanýþtýðýmýzda" but you can also find some results as "tanistigimizda", however you wouldn´t find "taniþtiðmizde"

ok ,ok guys it was early I had a busy night

Thank you all so much