Panasonic KX-TC1871CB Operating Instructions Manual page 27

≥In step 7, you cannot enter numbers greater than 12. Do not use military time.
(To set 13:00 hours, enter "0100" and select "PM" by pressing ($).)
If a power failure occurs, "
be shown on the main unit display. Reprogram the current day/time.
To check the day/time
Repeat steps 1 to 6 on page 26.
≥The current day/time is heard. When finished, press (FUNCTION/EXIT/CH).
For Call Display service users
≥The Call Display information will re-set the clock after the first ring if the
adjusted time is incorrect. However, the day will not be re-set by the Call
Display information. Adjust the correct day by following the steps on
page 26.
≥If the time has not previously been set, the Call Display information will not
adjust the clock.
≥The Call Display information will automatically adjust the clock for daylight
saving time.
" will flash or the incorrect day/time will
(p. 36)
"
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