@Vbhav I applied all 8 UPI apps at around 02.30-02.45 PM only. But due to some issues in UPI, mandates were not received till 04.30 PM.
So, at around 03.50-03.55 PM, I decided to apply from ASBA mode and was able to do it for 2 accounts then HDFC cut off time kicked in.
So waited for 6 mandates by cancelling and reapplying from Zerodha, then realized I am not the only one facing this mandate issue, there are others in CG forum, mentioned the same.
So waited till 04.30-04.45 PM, accepted all madates and quickly informed here.
If it helps, from next time,
I will try my level best to provide updates on time.