Why does lightning appear more often at noon 12- night 12 (afternoon-midnight)?

Lightning is a strong convective weather. After the sun comes out during the day, the water on the ground evaporates into the air to form clouds, and the strong rising clouds produce light cumulus clouds-thick cumulus clouds-cumulonimbus clouds (clouds that may thunder when it rains heavily). At the same time, due to poor heat, a low-pressure weather system, that is, an unstable weather system, will be produced. When a cumulonimbus cloud forms, it darkens and the cloud begins to discharge and thunder.

The explanation in the first half of the night: at night, the cloud top cools down, and there is no sunlight, while the land emits long-wave radiation to warm the cloud bottom, so convection occurs.

So the fundamental reason is that the convection is too strong, there are many clouds in the afternoon and the first half of the night, and the weather is unstable.