Yes, it is possible to file bankruptcy today to stop the foreclosure sale tomorrow. Although you are going to be facing a steep uphill battle to make your case work any time you show up to an attorney's office on the eve of foreclosure. I personally do not take cases like that.

It usually takes at least a few weeks to property prepare a bankruptcy case for filing. While it won't help with your immediate situation, the following article may be illuminating to others:

http://bklaw.com/bankruptcy-blog/2011/10/stopping-foreclosure-with-bankruptcy/

I hope it works out for you. Good luck.

Mark J. Markus, Attorney at Law

Handling exclusively bankruptcy law cases in California since 1991.

http://www.bklaw.com/

bankruptcy blog: http://bklaw.com/bankruptcy-blog/

Follow Me on Twitter: @bklawr