You can transfer funds 24x7 and instantly through IMPS using IFSC and Account Number. You can also make NEFT fund transfer from 8 AM and 7 PM from Monday to Saturday (except the second and fourth Saturday of each month). Also, RTGS is available to banks from 7 am to 6 pm on a working day.
You can also use UPI which is avaliable 24x7.
Disclaimer: All modes are subject to their daily limits