What is the date of enforcement of the Police (U.P. Amendment) Act, 2001?

The Police (Uttar Pradesh Amendment) Act, 2001 amended the Police Act, 1861 as it applies in Uttar Pradesh, and it came into force on 10 August 2001. A State amendment of this kind takes effect from the date fixed for it, and it applies only within that State. 15 August and 26 January are tempting because they are national days, but they are not the date of commencement.