During the night, the whole cycle reverses. Because the land is a good and fast absorber of heat, it also releases heat faster then the oceans. When it comes to night, and the sun stops heating the waters and the lands, the lands quickly release all the heat that they absorbed during the day, becoming cooler to touch since in the day, it would be burning hot if you touched the heated ground. While the land releases the heat, the waters do the opposite. It keeps the heat longer, releasing it slower and steadier so that the water temperature would be more then the land temperature. Since the oceans are more heated then the lands, then the lower pressure would become attracted to the oceans, while the higher pressure settles among the land areas, where the air is colder. The cycle continues, just as it does at day, but with the reversed way. Land breezes would be the wind blowing the low pressure air from the seas to the lands, where it becomes higher pressure.