On Networks N150RM User Manual - Manual (Page 70)

Troubleshooting
70
N150 Wireless ADSL2+ Modem Router N150RM
just finished setting up the modem router, wait at least 5 minutes, and check the date and
time again.
• Time is off by one hour. This modem has automatic DST adjustment. To use this feature,
in the Schedule screen, select the Automatically adjust for daylight savings time
check box and click Apply.