Ancient times? The weather? What's this word called?

Modern people say "weather" generally has two meanings: one is meteorology, such as rain, snow and temperature; Second, it refers to the morning and evening of a certain time of the day.

In the former sense, the word "Tian" is mostly used in classical Chinese, followed by the corresponding climatic conditions. Such as: rainy days, cold days, cloudy days, etc.

In the latter sense, "Tian" is often used in classical Chinese.

However, there is also a word "weather" in classical Chinese, for example, "On the third day of March, it was sunny and sunny, and many beauties enjoyed the cool in Chang 'an seaside."