Determining the middle of the night by the hour

Question:
The Shaykh: Peace, mercy, and blessings of Allah be upon you. How do we also know the middle of the night by the hour?

Answer:
The length of the night varies according to the seasons. That is, the night is the time between the setting of the sun and the appearance of the dawn. Look, the sun sets on you, and the dawn appears on you, so divide the time between them, and you will know the middle of the night. This varies according to winter and summer, because the night lengthens, shortens, and is sometimes moderate. So look at the time between the setting of the sun and the appearance of the dawn; how many hours is it? Divide it into two halves, and you will know the middle of the night.