Day and Night is a game mechanic in Lunacraft that changes the position of the Sun, Neptune, and Stars, and also changes the brightness. The color of light the Sun and Neptune produce also changes; the Sun produces white light while Neptune shines blue light. The length of time for Day is about 5.5 minutes, and the same for Night. Temporarily, when changing between day and Night and vice versa, the entire world goes black. You can speed up the Day-Night cycle by using a Chronobooster, or set it in reverse using a Chronowinder.
When you first create your moon, the time will always be day. You will be able to see the Sun, but interestingly, you will also be able to see the stars, implying that the moon has a very thin atmosphere. The sky color will also vary.