Need to calculate dep only 15days based on acquistion date.

Dear All,  (I could not find solution for my query in the forum )

I want to calculate depreciation for 15days only in below cases

If the asset is purchased between Jan 1 to Jan 15 deprecation should be calculated on Jan16th

If the asset is purchased between Jan 16 to Jan 30/31 deprecation should be calculated on next month first i.e feb 1st

Pls advise how to configure

Rgds

Naresh