I have an available balance, but can i use that money?

I have bank of america and i have money in the bank that i transfered from my savings to my checking account, and the transfer from the savings account to the checking is still pending, but on the main screen it says i have an available balance of the money i had deposited. So can i use the money, i tranferred the money yesterday|||Yes you can, the pending will come off Monday night when it officially posts.