If memorizing der, die, and das feels random at times, German calendar vocabulary gives you one of the cleanest, most reliable rules in the entire language: every day of the week, every month of the year, and every season is masculine (der).
Once you combine that rule with two tiny prepositional contractions—am for days and dates, and im for months and seasons—you can schedule appointments, book trains, and talk about habits accurately without guessing an article.
The Universal der Gender Rule (And Its 6 Related Exceptions)
Why do all days, months, and seasons take der? Because German classifies calendar units around der Tag (the day), der Monat (the month), and major seasonal divisions as masculine nouns.
Even so, six neighboring time nouns look similar in meaning while keeping their own genders—learn them right next to the core rule so they never catch you out:
- der Montag … der Sonntag → masculine (
der) - der Januar … der Dezember → masculine (
der) - der Frühling, der Sommer, der Herbst, der Winter → masculine (
der) - Watch these related words: die Woche (Wochen, week), die Nacht (Nächte, night), die Jahreszeit (Jahreszeiten, season), das Wochenende (Wochenenden, weekend), das Jahr (Jahre, year), and the alternate word das Frühjahr (spring).
Test how calendar words decline across all four cases in our Der, Die, Das Checker or review broader gender cues in our guide to German gender patterns.
Days of the Week (Die Wochentage)
Notice that six out of seven weekdays end in -tag (and der Tag is masculine!). Only der Mittwoch (“mid-week”) breaks the suffix pattern while still keeping der.
| German (Singular & Plural) | English | Habitual Adverb | Quick Usage Note |
|---|---|---|---|
| der Montag (Montage) | Monday | montags | Named after der Mond (moon) |
| der Dienstag (Dienstage) | Tuesday | dienstags | Historically linked to Germanic god Tyr/Ziu |
| der Mittwoch (Mittwoche) | Wednesday | mittwochs | Literally Mitte der Woche (mid-week) |
| der Donnerstag (Donnerstage) | Thursday | donnerstags | Linked to Donner (thunder) / Thor |
| der Freitag (Freitage) | Friday | freitags | Linked to Norse/Germanic Freya / Frija |
| der Samstag (Samstage) | Saturday | samstags | Standard across DACH; der Sonnabend used in North/East DE |
| der Sonntag (Sonntage) | Sunday | sonntags | Ladenschluss: most supermarkets/shops close in DE & AT |
am Montag vs. montags vs. jeden Montag
German gives you three neat ways to express when something happens on a weekday:
- One specific day (
am+ capitalized noun): Wir treffen uns am Montag. (We are meeting on Monday.) - Repeated habit (
-s+ lowercase adverb): Montags habe ich Yoga. (On Mondays I have yoga.) Note that lowercase montags is an adverb, not a noun! - Every single week (
jeden+ accusative noun): Ich arbeite jeden Montag im Büro. (Time expressions without a preposition—like jeden Montag, nächsten Freitag, letzten Samstag—take the accusative case, giving der words -en!)
The 12 Months of the Year (Die Monate)
Most German month names look pleasantly familiar to English speakers, with clear stress differences (for example, August stresses the second syllable in German, not the first!) and one major regional difference in Austria.
| German (Singular & Plural) | English | Austrian Standard / Note |
|---|---|---|
| der Januar (Januare) | January | der Jänner (official in Austria; also used in parts of Bavaria) |
| der Februar (Februare) | February | der Feber (heard colloquially in Austria; Februar is standard) |
| der März (Märze) | March | Notice the umlaut ä and sharp z ([ts]) |
| der April (Aprile) | April | Stress on second syllable: a-PRIL |
| der Mai (Maie) | May | Rhymes with English “my” |
| der Juni (Junis) | June | Spoken often as Juno on phone calls to avoid confusion with Juli |
| der Juli (Julis) | July | Spoken often as Julei on phone calls so it stays distinct from Juni |
| der August (Auguste) | August | Stress on second syllable: au-GUST |
| der September (September) | September | Stress on TEM; plural matches singular |
| der Oktober (Oktober) | October | Written with k, never c |
| der November (November) | November | Pronounced with [v] for v |
| der Dezember (Dezember) | December | Written with z, pronounced [ts] |
Want to hear and verify how German dates and numbers sound out loud? Try our German Number & Time Converter and brush up on calendar pronunciation in our alphabet & umlauts guide.
The Four Seasons (Die Jahreszeiten)
Although die Jahreszeit (the season) itself is feminine (because die Zeit is feminine), all four main season names are masculine (der):
| German | Plural | English | Seasonal Expression |
|---|---|---|---|
| der Frühling | (Frühlinge) | spring | im Frühling (also neuter synonym: das Frühjahr) |
| der Sommer | (Sommer) | summer | im Sommer / im Hochsommer (midsummer) |
| der Herbst | (Herbste) | autumn / fall | im Herbst (linked to English harvest) |
| der Winter | (Winter) | winter | im Winter (identical singular & plural) |
Prepositions Made Logical: am vs. im
Why does German insist on am Montag while requiring im Januar and im Sommer? Both contractions combine a two-way preposition in the dative case with the masculine/neuter dative article dem:
am=an+dem→ Used for narrow, pinpointed points in time on a calendar:- Days of the week: am Montag, am Freitag
- The weekend: am Wochenende (das Wochenende → dative dem → am!)
- Specific calendar dates: am 14. November (am vierzehnten November)
- Parts of the day: am Morgen, am Vormittag, am Nachmittag, am Abend — with one famous exception: in der Nacht (because die Nacht is feminine!).
im=in+dem→ Used for broader time containers that you stand “inside”:- Months: im Januar, im Jänner, im Mai
- Seasons: im Frühling, im Sommer, im Herbst, im Winter
- Years (optional Jahr): im Jahr 2026 — or without any preposition when giving just the year number: 2026 ziehe ich nach Wien. (Never write in 2026 in German! Say either 2026 alone or im Jahr 2026.)
Read more about spatial and temporal prepositions in our prepositions by case guide and check how clock times pair with days in how to tell time in German.
How to Write & Read German Dates Correctly
German writes dates in day.month.year order using periods after ordinal numbers—never slashes or English -th/-st suffixes:
- Written format:
14.11.2026or14. November 2026 - Spoken with
am(Dative-en): am vierzehnten November (zweitausendsechsundzwanzig) — “on the fourteenth of November” - Spoken at the top of a letter (
den+ Accusative): Berlin, den vierzehnten November 2026 - Spoken as “Today is…” (Nominative
-e): Heute ist der vierzehnte November.
Notice the pattern for ordinal numbers: numbers 1–19 add -te (zweite, vierte, vierzehnte — with irregular erste, dritte, siebte, achte), while 20 and up add -ste (zwanzigste, einunddreißigste). When preceded by am or den, add -n (am zwanzigsten Juli). You can practice numbers, ordinals, and de-DE audio playback inside the GermanLogic app or convert any date quickly with our Number & Time Converter.