When the simple present refers to the present time, what are its characteristic uses?

When the simple present refers to the present time, what are its characteristic uses?

When the simple present refers to the present time, it is suitable for the general timeless statements or the expression of so-called "eternal truths". At the same time, it also denotes the present existence or state of affairs. Besides, it can express regular recurrence such as a habit, and it is also found in the presentation of an event that happens simultaneously with speech.