Why is the afternoon in January longer than the first half of the day?

This is due to the noticeable increase in the declination of the Sun during the day. The sun in the afternoon draws a larger arc in the firmament than before noon.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.