Solar Terms in 2021
All 24 solar terms of 2021 to the second, in UTC+8. Lichun falls at 2021-02-03 22:58:48 — the BaZi year boundary, and the most looked-up row in this table.
| Term | Longitude | Instant (UTC+8) | BaZi month | Type |
|---|---|---|---|---|
| Xiaohan | 285° | 2021-01-05 11:23:26 | 丑月 | Jie |
| Dahan | 300° | 2021-01-20 04:39:51 | — | Qi |
| Lichun | 315° | 2021-02-03 22:58:48 | 寅月 | Jie |
| Yushui | 330° | 2021-02-18 18:43:58 | — | Qi |
| Jingzhe | 345° | 2021-03-05 16:53:42 | 卯月 | Jie |
| Chunfen | 0° | 2021-03-20 17:37:28 | — | Qi |
| Qingming | 15° | 2021-04-04 21:35:07 | 辰月 | Jie |
| Guyu | 30° | 2021-04-20 04:33:23 | — | Qi |
| Lixia | 45° | 2021-05-05 14:47:11 | 巳月 | Jie |
| Xiaoman | 60° | 2021-05-21 03:37:07 | — | Qi |
| Mangzhong | 75° | 2021-06-05 18:52:06 | 午月 | Jie |
| Xiazhi | 90° | 2021-06-21 11:32:10 | — | Qi |
| Xiaoshu | 105° | 2021-07-07 05:05:29 | 未月 | Jie |
| Dashu | 120° | 2021-07-22 22:26:25 | — | Qi |
| Liqiu | 135° | 2021-08-07 14:53:58 | 申月 | Jie |
| Chushu | 150° | 2021-08-23 05:34:58 | — | Qi |
| Bailu | 165° | 2021-09-07 17:52:56 | 酉月 | Jie |
| Qiufen | 180° | 2021-09-23 03:21:05 | — | Qi |
| Hanlu | 195° | 2021-10-08 09:39:03 | 戌月 | Jie |
| Shuangjiang | 210° | 2021-10-23 12:51:10 | — | Qi |
| Lidong | 225° | 2021-11-07 12:58:47 | 亥月 | Jie |
| Xiaoxue | 240° | 2021-11-22 10:33:45 | — | Qi |
| Daxue | 255° | 2021-12-07 05:57:06 | 子月 | Jie |
| Dongzhi | 270° | 2021-12-21 23:59:19 | — | Qi |
The twelve marked Jie are the month boundaries — a BaZi month pillar changes at each of them. The other twelve are "Qi" and do not.
Other years
Sources
- lunar-javascript (6tail, MIT) — solar-term instants, 干支 pillars, 大運/流年, 胎元/命宮/身宮 and the almanac tables.
- Hong Kong Observatory, Date and Time of the 24 Solar Terms — the reference used to check solar-term instants.
- Xieji Bianfang Shu and Sanming Tonghui — classical sources for the Wuhu Dun and Wushu Dun stem rules, hidden stems and the Ten Gods.
Algorithms last checked: 2026-07 · Method and accuracy