I was born in March of the lunar calendar 1990. What constellation is it? What calendar should I follow for my birthday?

Lunar calendar1March 990 17 is Gregorian calendar1April 990 12. Constellations are divided according to the solar calendar, so you are Aries. If you have a birthday, if you are in western countries, you will follow the solar calendar, because they don't say lunar calendar, so you will follow the solar calendar. That is April 12 is your birthday. However, in China, people usually celebrate their birthdays according to the lunar calendar, which means that your birthday is on March 17. Of course, there are some differences. Which birthday you choose is up to you. Some people have birthdays twice a year, both in the lunar calendar and the solar calendar. Hehe, because generally speaking, these two birthdays don't coincide. (19 years old seems that the lunar calendar and the solar calendar will overlap. I'm not sure. )