Yes, In system programming under feature settings
Daylight Time Change it to Y (Yes)
**the hour falls back 1 hour on the last Sunday in October at 2:00am and it advances 1 hour on the first Sunday of April at 2:00am
Let me know if this helps
****I should say that I have only done this on the MICS systems and not the 8x24 or 6x16 systems