Num of days permitted in Country after Primary applicant lea

[aja]

Hi,

Can some one please let me know on:

The number of days, the dependent can stay in country, after the primary applicant leaves the country upon completion of the project.

Situation :
I am on Tier 2 ICT Long Term staff Partner Visa.

Though the visa is valid till Dec 2014, the project may get over in a few months from now. Upon which the primary applicant will have to return back to India.

How many more days / weeks can i still be UK do vacate home, sell car and household goods etc, before i leave ?

Hope my question is clear and makes sense.