Get festivals that fall on a specific lunar date
Returns all festivals matching the given lunar date, filtered by
the locale's region. For example, zh-HK will return "農曆新年"
instead of "春节", and will not return "小年（北方）" which is
only observed in mainland China.
Lunar date value
Locale code (default: 'zh-CN')
Array of matching festival info objects
// 正月初一
getFestivals({ cycle: 78, year: 34, month: 1, leap: false, day: 1 }, 'zh-CN')
// [{ name: "春节", key: "spring", month: 1, day: 1, leap: false }]
getFestivals({ cycle: 78, year: 34, month: 1, leap: false, day: 1 }, 'zh-HK')
// [{ name: "農曆新年", key: "spring", month: 1, day: 1, leap: false }]
Traditional lunar calendar festivals with region-aware naming. Different regions may observe different festivals or use different names.