CP in Moscow

Does anyone know how long do my parents have to wait for the interview in Moscow. Their papers have been sent to Moscow from NVC on 06/03/2003.
We still don't have any letters from the Moscow Consulate.
Any ideas will be greatly appreciated.

Does anyone know how long do my parents have to wait for the interview in Moscow. Their papers have been sent to Moscow from NVC on 06/03/2003.
We still don't have any letters from the Moscow Consulate.
Any ideas will be greatly appreciated.