In the lunar calendar, when there are two fourth months, the second one is called the "leap fourth month." A year with a leap fourth month means that there are two fourth months in that year. The leap fourth month has unique customs and cultural traditions. Come to the special topic on the leap fourth month to learn more.

Leap Fourth Month

The year with the latest Dragon Boat Festival usually has a leap fourth month.
In the early 21st century, the leap fourth month is a common leap month, occurring approximately every 8 years or 11 years, and once every 38 years at most. Its frequency ranks second only to the leap fifth month. However, the interval between leap months is not fixed and gradually increases over time.

List of Years with a Leap Fourth Month

• 1648 (Wu Zi Year), 1667 (Ding Wei Year), 1686 (Bing Yin Year)
• 1705 (Yi You Year), 1724 (Jia Chen Year), 1735 (Yi Mao Year), 1743 (Gui Hai Year), 1754 (Jia Xu Year), 1792 (Ren Zi Year)
• 1800 (Geng Shen Year), 1819 (Ji Mao Year), 1830 (Geng Yin Year), 1838 (Wu Xu Year), 1849 (Ji You Year), 1868 (Wu Chen Year), 1887 (Ding Hai Year)
• 1906 (Bing Wu Year), 1925 (Yi Chou Year), 1944 (Jia Shen Year), 1963 (Gui Mao Year), 1974 (Jia Yin Year), 1982 (Ren Xu Year)
• 2001 (Xin Si Year), 2012 (Ren Chen Year), 2020 (Geng Zi Year), 2058 (Wu Yin Year), 2069 (Ji Chou Year), 2077 (Ding You Year), 2088 (Wu Shen Year), 2096 (Bing Chen Year)
• 2107 (Ding Mao Year), 2115 (Yi Hai Year), 2126 (Bing Xu Year), 2145 (Yi Si Year), 2164 (Jia Zi Year), 2183 (Gui Wei Year)
• 2202 (Ren Yin Year), 2210 (Geng Xu Year), 2221 (Xin You Year), 2240 (Geng Chen Year), 2278 (Wu Wu Year), 2297 (Ding Chou Year)
• 2316 (Bing Shen Year), 2335 (Yi Mao Year), 2346 (Bing Yin Year), 2365 (Yi You Year), 2384 (Jia Chen Year), 2392 (Ren Zi Year)
• 2430 (Geng Yin Year), 2441 (Xin Chou Year), 2460 (Geng Shen Year), 2479 (Ji Mao Year), 2498 (Wu Xu Year)
• 2517 (Ding Si Year), 2536 (Bing Zi Year), 2555 (Yi Wei Year), 2574 (Jia Yin Year), 2582 (Ren Xu Year), 2593 (Gui You Year)
• 2612 (Ren Chen Year), 2650 (Geng Wu Year), 2669 (Ji Chou Year), 2688 (Wu Shen Year)
• 2707 (Ding Mao Year), 2756 (Bing Chen Year)
• 2802 (Ren Yin Year), 2813 (Gui Chou Year), 2832 (Ren Shen Year), 2870 (Geng Xu Year), 2889 (Ji Si Year)
• 2908 (Wu Zi Year), 2927 (Ding Wei Year), 2938 (Wu Wu Year), 2946 (Bing Yin Year), 2957 (Ding Chou Year), 2965 (Yi You Year), 2984 (Jia Chen Year)
• 3022 (Ren Wu Year), 3033 (Gui Si Year), 3052 (Ren Zi Year), 3060 (Geng Shen Year), 3071 (Xin Wei Year), 3079 (Ji Mao Year), 3090 (Geng Yin Year)
• 3109 (Ji You Year), 3128 (Wu Chen Year), 3147 (Ding Hai Year), 3166 (Bing Wu Year), 3174 (Jia Yin Year), 3185 (Yi Chou Year)
• 3204 (Jia Shen Year), 3215 (Yi Wei Year), 3242 (Ren Xu Year), 3261 (Xin Si Year), 3280 (Geng Zi Year), 3299 (Ji Wei Year)
• 3310 (Geng Wu Year), 3329 (Ji Chou Year), 3367 (Ding Mao Year), 3394 (Jia Wu Year)
• 3405 (Yi Si Year), 3424 (Jia Zi Year), 3443 (Gui Wei Year), 3462 (Ren Yin Year), 3481 (Xin You Year)
• 3500 (Geng Chen Year), 3519 (Ji Hai Year), 3538 (Wu Wu Year), 3557 (Ding Chou Year)

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