WISMO228: current time

Hi!

Does anyone know how to get correct current time and date (from GSM network) using AT-commands with WISMO228 (L23a00GG 121211)? Is it possible?
I have read in AT Command Manual for Firmware L23 about proprietary command AT*PSUTTZ. How to get this response “*PSUTTZ: ,,,,,,,” by request?

Thank you.

https://forum.sierrawireless.com/t/fxt009-get-date-time-of-the-network-with-openat/5744/3