Power out. how do I reset clock GE DECT 6.0 - Thomson GE 27907GE1 Cordless Phone

Make sure the answering system is ON.
Press and hold the DAY/CHECK button to set the day of the week.
Press and hold the HOUR button to set the hour (a.m. or p.m.).
Press and release the MIN button to advance the clock in one minute intervals. Press and hold to increase by 5-minute increments.
After the time is set, the real time clock will be displayed on the handset within 1 minute.

NOTE: You must set the day manually. You may choose to set the time manually as well, although the time is automatically transmitted by your local phone company as part of Caller ID service. If you subscribe to Caller ID service, the current time is set automatically when you receive your first CID record.