Lifescan OneTouch Ultra Owner's Booklet page 49

STEP 6 Set the Day.
Press and release the C button until the
correct day appears. To move faster, hold
the C button down. With the correct day on
the display, press the M button and the
current unit of measure will start flashing.
Note: The 14- and 30-day averages in the meter memory are
calculated from results obtained during the 14 and 30
calendar days preceding the current date and time settings.
When the date and time are changed, the averages may
change.
Note: You must move through the hour, minutes, time format,
year, month and day, to turn off the meter and exit the setting
mode.
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