Days of the Week in Mandarin
Mandarin days of the week are the cleanest pattern in the language. Monday is 星期一 (xīng qī yī, literally week one) through Saturday 星期六 (xīng qī liù, week six). Sunday is the odd one out, named 星期日 (xīng qī rì) in writing and 星期天 (xīng qī tiān) in casual speech. The structural quirk learners arriving from European languages miss is that there are three competing words for week itself: 星期 (xīng qī), 礼拜 (lǐ bài) and 周 (zhōu), each carrying its own regional and register baggage but all combining with the day number in identical fashion.
The seven days
The numbered pattern, with the standard mainland 星期 form:
| Day | Simplified | Pinyin | Literal |
|---|---|---|---|
| Monday | 星期一 | xīng qī yī | week one |
| Tuesday | 星期二 | xīng qī èr | week two |
| Wednesday | 星期三 | xīng qī sān | week three |
| Thursday | 星期四 | xīng qī sì | week four |
| Friday | 星期五 | xīng qī wǔ | week five |
| Saturday | 星期六 | xīng qī liù | week six |
| Sunday | 星期日 | xīng qī rì | week sun |
| Sunday | 星期天 | xīng qī tiān | week day |
Tone marks are not decoration. 星期 is two flat first tones (xīng qī), then the day-number tone: yī (first), èr (fourth), sān (first), sì (fourth), wǔ (third), liù (fourth), and on Sunday 日 (fourth) or 天 (first). Traditional characters are identical to simplified throughout, which is rare in Mandarin vocabulary.
The point worth stopping on: there is no etymology to memorise. Romance-language learners spent months on lunes martes miércoles jueves viernes sábado domingo, seven unrelated Latin roots tied to Roman gods. Mandarin gives you 星期 plus one to six, and a separate word for Sunday. The cognitive load is roughly one-seventh of the European equivalent, and learners almost never get told this is a gift.
The three words for week
This is the structural thing the textbook flattens. Three words all mean week and all combine with the day number in the same frame.
| Week-word | Pinyin | Origin | Where it dominates |
|---|---|---|---|
| 星期 | xīng qī | star period, mainland Putonghua norm | Mainland textbooks, formal speech, neutral default |
| 礼拜 | lǐ bài | ceremony-worship, missionary-era loan | Southern China, Malaysia, Singapore, Taiwan casual, southern speech |
| 周 | zhōu | cycle or revolution | Written register, calendars, news headlines, text messages |
Monday is 星期一 (xīng qī yī), 礼拜一 (lǐ bài yī), or 周一 (zhōu yī). Same day, no semantic difference.
星期 is the safe default with mainland speakers and across HSK materials. 礼拜 catches mainland-textbook learners off guard. My partner's Malaysian-Chinese family use 礼拜 at the dinner table for every day of the week. In Taipei, language-course classmates trained on mainland materials would flinch when a shop assistant said 礼拜天 (lǐ bài tiān) rather than 星期天. In southern mainland cities, across Taiwan, and throughout the Southeast Asian Chinese diaspora, 礼拜 is the everyday form.
周 is what your eyes will actually see most often. Calendars print 周一 周二 周三 across the top. WeChat messages default to 下周三 (xià zhōu sān, next Wednesday) because it is two characters shorter than 下星期三. News headlines prefer 周 universally.
Sunday: 日 vs 天
Sunday is the only day with two valid mainstream forms.
- 星期日 (xīng qī rì) uses 日 (rì, day or sun). The literary and written register: calendars, news, broadcasts. Pairs with 周, giving 周日 (zhōu rì) as the universal written Sunday.
- 星期天 (xīng qī tiān) uses 天 (tiān, sky or day). The casual spoken register, the form a flatmate would use about weekend plans.
Both are standard mainland Mandarin; the choice is register, not correctness. In the 礼拜 frame both work (礼拜日 and 礼拜天), with 礼拜天 more common in southern speech. In the 周 frame only 日 works: 周日 is universal, 周天 is not used. Sunday gets special treatment because it is the day that did not get a number; 一 to 六 covers Monday through Saturday and Sunday sits outside the sequence with its own name.
The Monday-first week
Mandarin numbers Monday as 一. The week starts on Monday because Monday is numbered one; Sunday is the unnumbered day at the end. This matches ISO 8601 and the European calendar convention, not the US Sunday-first layout. Chinese paper and digital calendars print Monday in the leftmost column, and 下星期三 (xià xīng qī sān, next Wednesday) is unambiguous.
The 礼拜 etymology
礼拜 literally means ceremony-worship. It entered modern Chinese via 19th-century Christian missionaries who reached for 礼拜日 or 礼拜天 (worship day) for the Sunday observance. The usage stuck and generalised backwards: if Sunday is 礼拜日, the day before is 礼拜六, and so on through 礼拜一.
This explains the geography. Missionary activity was concentrated in southern coastal cities, British and Portuguese colonial territory (Hong Kong, Macau), and the Southeast Asian Chinese diaspora. The term took hold there. Northern mainland speech stuck with the older 星期. To a younger urban mainland speaker, 礼拜 reads as slightly old-fashioned or southern. To a Malaysian-Chinese speaker, 星期 reads as stiff or mainland-broadcast.
This, last and next
The week-pointing words use the measure word 个 (gè) with the week-word:
| Mandarin | Pinyin | Meaning |
|---|---|---|
| 这个星期 | zhè ge xīng qī | this week |
| 上个星期 | shàng ge xīng qī | last week |
| 下个星期 | xià ge xīng qī | next week |
The frame extends to specific days. This Monday is 这个星期一 (zhè ge xīng qī yī). Next Monday is 下个星期一, and in casual speech the 个 often drops: 下星期一. The shorter 周 form is even more compact: 下周一 (xià zhōu yī), the dominant written and text-message form.
A trap worth flagging: do not say 明星期一 by analogy with 明天 (míng tiān, tomorrow). The 明 prefix only attaches to 天 and 年 (明年, míng nián, next year), not to 星期 or 周. Next Monday is 下星期一, not 明星期一.
Yesterday, today, tomorrow
The day-relative words sit alongside the days of the week and combine with them in is-statements.
| Mandarin | Pinyin | Meaning |
|---|---|---|
| 昨天 | zuó tiān | yesterday |
| 今天 | jīn tiān | today |
| 明天 | míng tiān | tomorrow |
To say yesterday was Monday: 昨天是星期一 (zuó tiān shì xīng qī yī). The copula 是 (shì, to be) joins the day-relative and the day-name. Today is Tuesday: 今天是星期二. Mandarin does not mark tense on 是, so the same construction covers past, present and future, with the day-relative word doing the temporal work.
Asking what day it is
The standard question is 今天星期几 (jīn tiān xīng qī jǐ), literally today week-which. 几 (jǐ) is the small-numbers question word, used when the answer is expected to be a single digit. 今天是星期几 also works with the optional 是, but the no-是 version is the more common spoken form.
The answer mirrors the structure: 今天星期三. No 是 needed if the question dropped it. The 礼拜 and 周 versions work identically: 今天礼拜几, 今天周几. Beware 今天几号 (jīn tiān jǐ hào), which asks for the date number, not the day of the week.
Weekdays and weekends
The functional pair sits slightly outside the day-name frame.
| Mandarin | Pinyin | Meaning |
|---|---|---|
| 工作日 | gōng zuò rì | working day, weekday |
| 周末 | zhōu mò | weekend |
Note that 周末 (zhōu mò, literally week-end) uses the 周 form even when the speaker is otherwise using 星期 for the individual days. It is a fixed expression. 星期末 does not work; 周末 is the locked form for weekend.
工作日 is the formal term, used in HR and business contexts. In casual speech, native speakers often just enumerate (星期一到星期五, xīng qī yī dào xīng qī wǔ, Monday to Friday) rather than reach for the compound.
Abbreviations and writing
In casual writing and digital communication, the 周 form dominates because it is shorter: 周一 is two characters, 星期一 is three. WeChat, text messages and email subject lines all default to 周 on cost-per-character grounds alone.
Paper and digital calendars often display 一 二 三 四 五 六 日 across the top with no 星期 or 周 prefix at all, on the assumption that the user can fill in the rest. This is the most compressed form and the one to recognise rather than produce.
Cross-links
- Mandarin pillar for the adult-learner curriculum that puts the days of the week in the first 100 words.
- Pinyin and tones for the tone marks on 星期 and the day numbers.
- Mandarin vocabulary by HSK for where 星期, 周, 礼拜 and the day numbers sit on the HSK 1 to HSK 6 ladder.
- How to say good morning in Mandarin for the times-of-day greetings that pair with the day-of-week vocabulary.
- Mandarin grammar for the 是 copula and the measure-word 个 patterns this article relies on.