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14
Leap second (Automatic leap second reception function)
Leap second
The leap second is to compensate for deviations from the
universal time (UT) which is astronomically determined and
the "International Atomic Time (TAI).
"1 second" may be added (deleted) once a year or every few
years.
Automatic leap second reception function
A leap second is automatically added by receiving "leap
second data" from GPS signals at the time of leap second
addition (deletion).
* "Leap second data" includes information about future leap second addition and
current leap second data.
Receiving leap second data
When the GPS signal reception
(automatic time adjustment, manual
time adjustment, or time zone
adjustment) is performed on or after
December 1st and June 1st, the
multi-function indicator hand may
display as shown at the right.
When the leap second data reception
is completed, the multi-function
indicator hand returns to display the
day of the week (or the charging status). Use the watch as it
is.
* The leap second data reception is performed every half a year regardless of leap
second addition.
After the completion of time adjustment (automatic time
adjustment or manual time adjustment), up to 18 minutes may
be required until receipt of leap second data is complete.
When GPS signals are received under the following conditions, the
leap second data reception is also started.
• GPS signals have not been received for a long time
• Leap second data reception has failed
With GPS signal reception, leap second data reception will be
performed again. This will continue until leap second data
reception is successful. Confirm the result (success or failure) of
the leap second data reception.
16
Receiving the leap second data
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