No, the Moon is visible for varying durations throughout its lunar cycle, regardless of the hemisphere. The length of time the Moon is visible each day is not fixed at 12 hours. It depends on factors such as the Moon's phase, its position in the sky, and the observer's location on Earth.
In general, the Moon is visible for approximately 12 hours a day, but this can vary significantly. For example, during a full moon, the Moon is visible for most of the night, from sunset to sunrise. However, during a new moon, the Moon is not visible in the night sky because it is located near the Sun in the sky, and its illuminated side faces away from Earth.
The duration of visibility can also be influenced by the observer's latitude and the time of year. Near the poles, the Moon can be visible for several consecutive days during certain periods. In contrast, closer to the equator, the Moon may be visible for shorter periods, rising and setting relatively quickly.
Therefore, the visibility of the Moon is not strictly tied to the hemisphere but rather depends on various factors, including the Moon's phase, its position in the sky, and the observer's location on Earth.