The timing varies significantly as through an online IPO applciation, its till 1 PM, offline applications is till 5 PM. For banks, its from 2 PM till 4 PM depending upon the banks on the closing day of the IPO applciation submission.
The last day for applying for an IPO application varies from the platform through which you’re applying. If you go through the online route, most of the applications close at 1 PM or 3 PM. The timings vary significantly from one broker to another. In a physical IPO application, the last acceptance of an IPO application is by 5 PM by the broker. However, if an IPO application is submitted via a bank, it varies significantly from one bank to another. But mostly the timings are from 2 PM to 4 PM through all central banks in the country.