La Crosse Technology WS-9014TWC Instruction Manual page 8

PM hours. During the AM
hours this area will be blank.
b. When the correct hour is
shown, press and release
the "SET" button once.
4. A minute will now be flashing.
a. Press and release the
"MIN/MAX" button until
the correct minutes are
displayed.
Press and release the SET button
once more and you are done.
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