Day for night in a Black n white movie?

Black and White is very different to colour. You need to specifically shoot with B&W in mind, or you're going to get average looking black and white film. The way you light and expose is going to be somewhat different.
Day for night in colour is tough, but day for night for b&w is infinitely harder, particularly if you're shooting on locations with no lights etc. You can easily increase contrast and stick a heavy blue tint to colour film and give a relatively believable night feel. In black and white, you have to really think carefully about what you do/don't see at night. Without the right lighting, it's almost going to impossible to make it look believable if you're converting.

yeah, that does seem like a tough challenge. Good luck bro!

Thanks a lot bro.. Will post some screenshots once it's done

@jax_rox.. yea i shot keeping it in mind.. here is a thread from the movie
http://www.indietalk.com/showthread.php?t=36198