Where to get weekly and monthly expiry date of nifty

Hey @Jagdish Narayan Singh10,

You can get the weekly and monthly expiry date of any scrip by opening the option chain. Open the scrip --> Right click on the chart --> Option chain.

Once you open the Option chain, Click on expiry and a drop down menu will appear. You will get the Weekly & Monthly expiry contract dates. 
 

Hope this helps :)