Chinese almanac
Look up a day's Chinese almanac: lunar date, sexagenary pillars, nayin, solar terms, the Jianchu and Huangdao day gods, zodiac clash, suitable/avoid lists and the luck of the twelve double-hours — computed locally and deterministically.
Runs in your browserEvery computation happens in your browser — your data never leaves this device.
Almanac
Lunar date, pillars, suitable/avoid lists and hour luck together.
Enter a Gregorian date to look up the almanac
Suitable: 0 · Avoid: 0 · Hours: 0
What this tool does
- Check today's lunar date and the traditional suitable/avoid list.
- Look up the sexagenary pillars and zodiac of a birth date.
- See the lucky double-hours and the next solar term.
Example
Input
2024-02-10
Output
公历 / Gregorian: 2024-02-10 周六 · Saturday 农历 / Lunar: 二〇二四年正月初一（甲辰年 · 龙） 干支 / Pillars: 年柱 甲辰 · 月柱 丙寅 · 日柱 甲辰 纳音 / Nayin: 覆灯火（年）· 覆灯火（日） 节气 / Solar term: 无（下一节气 雨水 9 天后） 建除 / Jianchu: 满日 · 黄黑道 白虎 冲煞 / Clash: 冲狗 · 合鸡、鼠、猴 星座 / Constellation: 水瓶座 01/20–02/18 宜 / Suitable: 祭祀、祈福、开市、造屋 忌 / Avoid: 服药、栽种、安葬 十二时辰 / Twelve shichen: 子时 23:00–00:59 吉 丑时 01:00–02:59 凶 寅时 03:00–04:59 凶 卯时 05:00–06:59 吉 辰时 07:00–08:59 凶 巳时 09:00–10:59 凶 午时 11:00–12:59 吉 未时 13:00–14:59 凶 申时 15:00–16:59 凶 酉时 17:00–18:59 吉 戌时 19:00–20:59 凶 亥时 21:00–22:59 凶
Lunar conversion uses the packed 1900–2100 table, solar terms come from the apparent solar longitude, and the year pillar switches at Start of Spring. This is calendar arithmetic only.
Frequently asked questions
Do the results change from day to day?
No. The output depends only on the date you enter, so the same date always yields the same almanac without reading the system clock.
Why does the year pillar switch at Start of Spring instead of the Lunar New Year?
Sexagenary years follow the solar terms: Start of Spring begins the Yin month, so dates before it belong to the previous year.
Where do the suitable and avoid lists come from?
They use the traditional Jianchu day-god table: the gap between the month branch and the day branch selects 建/除/满…, and each maps to its own list.
Is the date I look up stored anywhere?
No. Everything is computed in your browser and nothing is uploaded.
Keywords：老黄历chinese almanac黄历宜忌干支农历daily almanac通书