Form 108-When to submit?

Dear All,

Please tell me..

I am PCC student- with 3.5years of articleship period.

My articleship training computed as per institute guidelines gets over in 24th Jan 2011 as I am having Leave credit of 55 days...

But the actual completion date as per training period is up to 19th March 2011.

1. When can I submit Form 108?

2. When will be my last working day?