Is there a website that can check the longitude of the sun and the longitude of the celestial sphere online?

The vernal equinox is the moment when the ecliptic of the sun is zero, and then the corresponding ecliptic of each solar term increases by 15 degrees: Qingming 15, Grain Rain 30, Changxia 45, and so on. Twenty-four solar terms are a folk custom that has been passed down for thousands of years, and it is unlikely to attract the attention of scientific research institutions, so even ordinary astronomy enthusiasts can swear, hehe ~

Recommend a software to the landlord, Stellarium, which can accurately simulate the position of celestial bodies for thousands of years. For example, if you want to know the exact time of the spring breeze this year, just choose the sun, adjust the time, and find the moment when its longitude is zero. For daily life, simulation with accuracy to the second is more than enough, right?