What is the biggest constellation in the whole day?

Ophiuchus is the longest and largest of the 88 constellations in the whole day, with a span of 1/4 days, and it is also one of the 48 constellations listed by Ptolemy. Contains the ancient constellations of China: Liu Su, Waichu, Su Xing, Zhang Su, Pingping, Forever Summer Watch, Clear Autumn and Zhanche. Except for a red second-class bright star (that is, the alpha star of Ophiuchus, which China called "Star One"), all the other stars are very dark, so Ophiuchus is not very noticeable. To the south of Cancer and to the lower right of alpha star Leo (Xuanyuan XIV), there are five third-class stars and fourth-class stars forming a small circle, which is the head raised by the long snake. Located in the southwest of Xuanyuan 14, constellation I is equivalent to the heart of a long snake. Not to be confused with Aquarius. Latitude changes can be seen between+54 and _ 83, and the best observation month is April.