Dates, days and months

no capitals, no de, and only one ordinalA1

In one line

le + number + month — no de, no capital letter, and only the first of the month is an ordinal.

The table

Days of the weekMonthsSeasons
lundi /lœ̃.di/ — Mondayjanvier /ʒɑ̃.vje/le printemps /lə pʁɛ̃.tɑ̃/ — spring
mardi /maʁ.di/ — Tuesdayfévrier /fe.vʁi.je/l'été /le.te/ — summer
mercredi /mɛʁ.kʁə.di/ — Wednesdaymars /maʁs/l'automne /lo.tɔn/ — autumn
jeudi /ʒø.di/ — Thursdayavril /a.vʁil/l'hiver /li.vɛʁ/ — winter
vendredi /vɑ̃.dʁə.di/ — Fridaymai /mɛ/
samedi /sam.di/ — Saturdayjuin /ʒɥɛ̃/
dimanche /di.mɑ̃ʃ/ — Sundayjuillet /ʒɥi.jɛ/
août /ut/
septembre /sɛp.tɑ̃bʁ/
octobre /ɔk.tɔbʁ/
novembre /no.vɑ̃bʁ/
décembre /de.sɑ̃bʁ/

The French week starts on lundi, not on Sunday. In calendars and timetables Monday is always the first column.

Writing the date

StructureExample
the rulele /lə/ + number + monthle 15 mars /lə kɛ̃z maʁs/
the first of the monthle premier /lə pʁə.mje/le 1er janvier /lə pʁə.mje ʒɑ̃.vje/
with the weekdayle /lə/ + day + number + monthle lundi 15 mars /lə lœ̃.di kɛ̃z maʁs/
with the year+ yearle 15 mars 2026 /lə kɛ̃z maʁs dø mil vɛ̃t.sis/
askingQuelle est la date ? /kɛ.l‿ɛ la dat/

Three things English will make you add, and French does not want:

❌✅Why
le 15 de marsle 15 marsno "of"
le Marsle marsmonths are lowercase
le quinzième marsle quinze marscardinal, not ordinal

That last one is the one to fix first. English says "the fifteenth of March" — an ordinal every single time. French says the plain number: le quinze mars, "the fifteen March". Only the first is an ordinal: le premier janvier.

And a practical warning about numeric dates. 05/03/2026 is 5 March in France and May 3rd in the United States. France writes day/month/year. On a form, a ticket or a contract, read the format before you read the date.

Capital letters — none of them

Days, months and seasons are all lowercase in French:

FrenchEnglish
lundi /lœ̃.di/Monday
mars /maʁs/March /maʁʃ/
le printemps /lə pʁɛ̃.tɑ̃/Spring

This is one of the most frequent writing mistakes, because English does the opposite.

le in front of a day — a real difference in meaning

MeaningPronunciation
Lundi, je travaille.this coming Monday I'm working/lœ̃.di ʒə tʁa.vaj/
Le lundi, je travaille.on Mondays I work — a habit/lə lœ̃.di ʒə tʁa.vaj/

The same for le matin, le soir:

Le matin, je bois du café. — in the mornings I drink coffee

English marks the same difference with a plural -s: "on Monday" versus "on Mondays". French uses le instead — le lundi is English "on Mondays", and it never takes an s.

Prepositions with months and seasons

PrepositionExample
monthen /ɑ̃/ or au mois de /o mwa də/en mars /ɑ̃ maʁs/
au mois de mars /o mwa də maʁs/
yearen /ɑ̃/en 2026 /ɑ̃ dø mil vɛ̃t.sis/
printemps /pʁɛ̃.tɑ̃/au /o/au printemps /o pʁɛ̃.tɑ̃/
été /e.te/
automne /o.tɔn/
hiver /i.vɛʁ/
en /ɑ̃/en été /ɑ̃.n‿e.te/
en hiver /ɑ̃.n‿i.vɛʁ/

au printemps is the only season that takes au — because it begins with a consonant, and the others begin with a vowel.

Common time expressions

FrenchPronunciationEnglish
aujourd'hui/o.ʒuʁ.dɥi/today
hier/jɛʁ/yesterday
avant-hier/a.vɑ̃.t‿jɛʁ/the day before yesterday
demain/də.mɛ̃/tomorrow
après-demain/a.pʁɛ.də.mɛ̃/the day after tomorrow
la semaine dernière/la sə.mɛn dɛʁ.njɛʁ/last week
la semaine prochaine/la sə.mɛn pʁo.ʃɛn/next week
le mois dernier/lə mwa dɛʁ.nje/last month
l'année prochaine/la.ne pʁo.ʃɛn/next year
en ce moment/ɑ̃ sə mɔ.mɑ̃/at the moment
de nos jours/də no ʒuʁ/these days

an or année

WhenExample
an /ɑ̃/with a numberdeux ans /dø.z‿ɑ̃/
J'ai 30 ans. /ʒe tʁɑ̃.t‿ɑ̃/
année /a.ne/with an adjective or for a durationune bonne année /yn bɔ.n‿a.ne/
toute l'année /tut la.ne/

The same pair applies to jour/journée, matin/matinée, soir/soirée:

Bonjour — a greeting at a moment · Bonne journée — have a good day, all of it

Examples

EnglishFrenchPronunciation
What's the date?Quelle est la date ?/kɛ.l‿ɛ la dat/
It's the fifteenth of March.C'est le quinze mars./sɛ lə kɛ̃z maʁs/
The first of January.Le premier janvier./lə pʁə.mje ʒɑ̃.vje/
I'm coming on Monday.Je viens lundi./ʒə vjɛ̃ lœ̃.di/
I work on Mondays.Le lundi, je travaille./lə lœ̃.di ʒə tʁa.vaj/
In March.En mars./ɑ̃ maʁs/
In spring.Au printemps./o pʁɛ̃.tɑ̃/
In summer.En été./ɑ̃.n‿e.te/
I'm thirty.J'ai trente ans./ʒe tʁɑ̃.t‿ɑ̃/
Have a good day.Bonne journée./bɔn ʒuʁ.ne/

Common mistakes

❌✅Why
le 15 de marsle 15 marsNo de
le Marsle marsMonths are lowercase
le quinzième marsle quinze marsOnly the first is an ordinal
J'ai trente années.J'ai trente ans.With a number it is an
en printempsau printempsThe only season taking au
Lundi je travaille for a habitLe lundi, je travaille.The le makes it habitual

Where the names of the days came from

seven planets, seven gods

The French day names come from the Roman planets, and each carries -di, from Latin dies, "day":

DayPlanet
lundi /lœ̃.di/Luna — the Moon
mardi /maʁ.di/Mars
mercredi /mɛʁ.kʁə.di/Mercurius
jeudi /ʒø.di/Jupiter
vendredi /vɑ̃.dʁə.di/Venus
samedi /sam.di/from sabbatum /sa.ba.tɔm/ — the Hebrew sabbath
dimanche /di.mɑ̃ʃ/from dies dominicus /di do.mi.ni.kys/ — the Lord's day

The last two are Christian and break the pattern — and they are exactly the two whose -di is missing or moved. dimanche is the only day with the di at the front instead of the end.

English names its days after the same seven planets — it just used the Germanic gods instead of the Roman ones. Line them up and they match one for one:

FrenchEnglishThe same planetPronunciation
lundiMondaythe Moon/lœ̃.di/
mardiTuesdayMars = Tiw/maʁ.di/
mercrediWednesdayMercury = Woden/mɛʁ.kʁə.di/
jeudiThursdayJupiter = Thor/ʒø.di/
vendrediFridayVenus = Frigg/vɑ̃.dʁə.di/
samediSaturdaySaturn — English kept the Roman name/sam.di/
dimancheSundaythe Sun — French switched to the Lord's day/di.mɑ̃ʃ/

So the two lists are the same list. mardi is Tuesday because Mars is Tiw; jeudi is Thursday because Jupiter is Thor. If you confuse mardi and mercredi, count on the English: Tuesday–Mars–mardi, Wednesday–Woden/Mercury–mercredi.

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