a week Thursday

[navi]

I think one can say:
a week Thursday
or
a week on Thursday

but can one say:
1-three weeks on Thursday
(on the fourth Thursday from now)

 

[deddish]

I'd rather "a week Thursday" or "a week from Thursday."

That being said, yes, you can use "three weeks Thursday."

 

[Cypherpunk]

An older expression you may hear is Thursday week. This means a week from next Thursday. So, if it's Tuesday, and I say Thursday week, I am indicating nine days in the future.

 

[Cagey]

I wonder whether you will be understood as you wish when you use these terms. You have provided no context. As it stands "three weeks on Thursday" doesn't make me think of the fourth Thursday from now, but rather three weeks in the past ending on the coming Thursday.

Especially when discussing dates, context is important.