Learn and practise · 3 lessons · 6 questions
Learn the Chinese Calendar
Check the date and calendar convention before reading almanac labels. This course uses Hong Kong time, Asia/Hong_Kong, and fixed examples from 2026. Answers stay the same when today's date changes.
Progress stays in this browser. Chinese and English share the same record.
Read the example, then try it
Two dates for one day
Gregorian and Chinese lunar dates describe the same day using different calendars. Lunar months follow the Moon, with leap months keeping the calendar aligned with the seasons. Gregorian 17 February 2026 is lunar month 1, day 1. The fixed instant 16 February 2026 at 16 hours UTC is already midnight on 17 February in Hong Kong. Convert the instant to the Hong Kong date before looking up the lunar date.
| Field | Value |
|---|---|
| UTC date and time | 16 February 2026, 16 hours |
| Hong Kong date and time | 17 February 2026, midnight |
| Gregorian date | 17 February 2026 |
| Lunar date | Lunar year 2026, month 1, day 1 |
Lesson notes and examples
1. Two dates for one day
Gregorian and Chinese lunar dates describe the same day using different calendars. Lunar months follow the Moon, with leap months keeping the calendar aligned with the seasons. Gregorian 17 February 2026 is lunar month 1, day 1. The fixed instant 16 February 2026 at 16 hours UTC is already midnight on 17 February in Hong Kong. Convert the instant to the Hong Kong date before looking up the lunar date.
| Field | Value |
|---|---|
| UTC date and time | 16 February 2026, 16 hours |
| Hong Kong date and time | 17 February 2026, midnight |
| Gregorian date | 17 February 2026 |
| Lunar date | Lunar year 2026, month 1, day 1 |
2. Solar terms and year boundaries
The 24 solar terms divide the Sun's apparent annual path into intervals of 15 degrees of ecliptic longitude. In 2026, Li Chun falls on 4 February and lunar New Year's Day on 17 February. This site's almanac uses Li Chun for the stem-branch year, and lunar New Year for its lunar-year and zodiac labels. Between those dates, the year labels use different boundaries.
| Date | Calendar event |
|---|---|
| 4 February | Li Chun; the site's stem-branch year is labelled Bing-Wu |
| 17 February | Lunar month 1, day 1; lunar New Year |
3. Read Yi, Ji and clash labels
Yi lists activities favored by the traditional almanac; Ji lists activities it advises avoiding. The site's record for 17 February 2026 lists ancestral or deity rites under Yi and marriage under Ji, with a Dragon clash and north sha label. Dragon clash records the day's branch relationship with Chen, the Dragon branch; north is the recorded sha direction. These are cultural reference labels and cannot establish whether an individual's activity will succeed.
| Field | Selection |
|---|---|
| Yi | Ancestral or deity rites |
| Ji | Marriage |
| Clash and sha | Dragon clash, north sha |
Continue learning
Sources and conventions
- Hong Kong Observatory 2026 calendar conversion table
- Hong Kong Observatory guide to the 24 solar terms
- The site's almanac labels
Updated October 8, 2026
Practice questions
How do lunar dates and solar terms differ?
Lunar months follow the Moon, with leap months keeping them aligned with the seasons. Solar terms use the Sun's position at intervals of 15 degrees of ecliptic longitude.
Do almanac labels guarantee an outcome?
Yi and Ji record traditional activity classifications. The result of an activity still depends on practical arrangements and circumstances.
How do mistakes and reviews work?
Missed questions return at the end and become due in ten minutes. Correct answers move to review intervals of one, three, seven days and longer. First-answer accuracy keeps the original result. You can return to due questions after completing the course.
Can I continue in the other language?
Both languages share progress, first-answer results and review dates in this browser. A different device or cleared site data starts a new record. Practice is free and needs no account.