IPO Subscriptions are available on the stock exchanges website almost immediately. To find out more, please visit the IPO section on the exchange's website.
Each exchange only shows data about bids received on their behalf in real-time. To get the total figures, you can add the two (BSE Data and NSE Data), at any hour of the day.
However, total figures (combined bidding state from NSE and BSE) at the end a day are displayed on these sites at 5 PM.