Gregorian calendar 1954

We should know that the monthly dry branch does not start from the first day of the lunar calendar, but from the solar terms (non-neutral gas) in the 24 solar terms. In this way, there are two monthly branches in a lunar month, namely, the October branch of 1954, namely, Yihai and Jia Rong, and the February branch of 1983, namely, Mao Yi and Chen Bing. This is completely correct, so you should misunderstand it. You can check the calculation method of monthly branches online.