public void setDateVisible(final boolean VISIBLE) {
        if (null == dateVisible) {
            _dateVisible = VISIBLE;
            fireTileEvent(VISIBILITY_EVENT);
        } else {
            if (!dateVisible.isBound()){
                dateVisible.set(VISIBLE);
            }
        }

    }
Defines if the date of the clock will be drawn.
@param VISIBLE
src/main/java/eu/hansolo/tilesfx/Tile.java