How to get the latest week expiry dates for indexes

[manishru]

Hi, I want to trade on expiry day the indexs so I want to know the expiry date for Sensex, Finnifty, Nifty, BankNifty and Sensex. As some days we have a holiday and lthen date changes. So wanted to now a better way to get the expiry date so as automatially get right PE and CE options.