


Illumination may be hard to see when viewed under direct sunlight.Once you set the date, there should be no reason to change it except after you have the watch’s batteries replaced.
CASIO TIDE GRAPH SETTINGS FULL
The watch’s built-in full automatic calendar makes allowances for different month lengths and leap years.


If you leave the watch in the Moon/Tide Data, Alarm or Hand Setting Mode for two or three minutes without performing any operation, it automatically changes to the Timekeeping Mode.If you leave a screen with flashing digits on the display for two or three minutes without performing any operation, the watch automatically exits the setting screen.The indicator is displayed in all modes when the button operation tone is turned off.Holding down Cto turn the button operation tone on or off also causes the watch’s current mode to change.In any mode (except when a setting screen is on the display), hold down Cto toggle the button operation tone on ( not displayed) and off ( displayed). To turn the button operation tone on and off Even if you turn off the button operation tone, the alarm, Hourly Time Signal, and Countdown Timer Mode alarm all operate normally.You can turn the button operation tone on or off as desired. The button operation tone sounds any time you press one of the watch’s buttons. When setting the lunitidal interval for this watch, use the time differential between the Moon’s transit over the meridian until high tide. Both the time differential between the Moon’s transit over the meridian until high tide and the time differential between the Moon’s transit over the meridian until low tide are known as the “lunitidal interval”. Actual high tide occurs somewhat later, due to factors such as viscosity, friction, and underwater topography. Theoretically, high tide is at the Moon’s transit over the meridian and low tide is about six hours later. The greater the error in a particular Moon age, the greater the error in the resulting tide graph. Remember that the margin for error of the Moon age displayed by this watch is ☑ day. The tide graph displayed by this watch is based on the current Moon age.The lunitidal interval differs according to your current location, so you must specify a lunitidal interval in order to obtain the correct tide graph readings. The tide graph of this watch indicates tidal movement based on the Moon’s transit over a meridian and the lunitidal interval. Tides rise and fall about every six hours. Tides are the periodic rise and fall of the water of oceans, seas, bays, and other bodies of water caused mainly by the gravitational interactions between the Earth, Moon and Sun. The current tide level is indicated by the displayed graphic segment. The Tide Graph has six graphic segments, each of which indicates a different tide level.
