What is the lunar calendar algorithm for querying any year?

This is not difficult, there are two most commonly used and best ways to achieve it:

First, open a computer browser and search for a perpetual calendar. After finding the perpetual calendar, you can select the year and date you want to query and view the lunar calendar corresponding to the solar calendar you want to view.

The second method is more convenient than the first method. Open the calendar in our mobile phone, select the date you want to query, and you can see the lunar calendar corresponding to the selected date.

Of course, it's a bit cumbersome. Functions like Excel can also achieve this function, but I don't think it's necessary to go to so much trouble. The simpler and more intuitive the solution to the problem, the better.