I am not an expert but I do know that there are regional variations to Chinese opera, including different dialects. From what I can tell from the subtitles, you are right that this opera is (Lunar) New Year related (农历新年, although this translates more to "agriculture calendar new year") or Spring Festival (春节) - both are acceptable. Chinese Lunar New Year (as well as Lunar New Year celebrated in cultures/countries like Thet in Vietnam) tends to take place at the end of Jan to end Feb every year. Specific to Chinese New Year, though, the Chinese calendar is lunisolar, so both Solar and Lunar New Years are important, with Solar New Year usually taking place on the 4th Feb (sometimes 5th).
I am not an expert but I do know that there are regional variations to Chinese opera, including different dialects. From what I can tell from the subtitles, you are right that this opera is (Lunar) New Year related (农历新年, although this translates more to "agriculture calendar new year") or Spring Festival (春节) - both are acceptable. Chinese Lunar New Year (as well as Lunar New Year celebrated in cultures/countries like Thet in Vietnam) tends to take place at the end of Jan to end Feb every year. Specific to Chinese New Year, though, the Chinese calendar is lunisolar, so both Solar and Lunar New Years are important, with Solar New Year usually taking place on the 4th Feb (sometimes 5th).