Passing non Awk Argument in Awk

Shell Programming and Scripting
1

Dear Conerned,
I am facing a situation where i need to pass an argument which is non-awk variable like

day=090319
awk '/TID:R/ && /TTIN:/' transaction.log

I want to add this day variable like below

awk '/TID:R$day/ && /TTIN:/' transaction.log

But it is not working. :confused:

2 
 awk -v var=$day '$0 ~ "TID:R"var && /TTIN:/' transaction.log

Regards