1, the sunrise symbolizes a new day, a new beginning, vigorous vitality, full of hope and confidence in the future, optimistic about life, always in good spirits. The sunrise, there are two ways to read, read cháoyáng means toward the sun, generally only towards the east. When pronounced zhāoyáng, it means the rising sun.

2, sunrise sunlight by the Earth's atmosphere because of the impact of dust and Rayleigh scattering, so this time the sky will be filled with haze, but the sunrise of the haze than the sunset of the lighter, this is because of the sunrise in the atmosphere of the dust than the sunset for less.

3. The time of sunrise varies with the season and the latitude of each place. Traditionally, it is believed that in the northern hemisphere, the winter solstice is the latest time for sunrise, but in fact the latest time for sunrise is early January. By the same token, the earliest sunrise is not at the summer solstice, but at the beginning of June. Even at the equator, the times of sunrise and sunset vary slightly throughout the year. These variations can be expressed in terms of diurnal tracks.

4. Sunrise and sunset times can be calculated by tracking the sun's path, but the calculated times will be slightly different from what they really feel, with the calculated hours of sunlight longer than what they really feel, and the calculated hours of darkness shorter than what they really feel.