6. What constellation is19?

Gemini. Constellations were introduced into China from the west, and the Gregorian calendar is an international calendar, so constellations are calculated according to the Gregorian calendar. Gemini is the third house of the zodiac, located in the east of Taurus and the west of Cancer. The time interval is May 2 1-June 21,and June 19 is in this period, so June 19 is Gemini.