Basic Temporal Prepositions: am, im, um, von…bis

1.Temporal prepositions am, im, um, von…bis

Temporal prepositions show when something happens, how long something lasts, or between which points in time something takes place.

2.Temporal prepositions answer time questions

Temporal prepositions help answer questions such as Wann?, Seit wann?, Bis wann?, Von wann bis wann?. At A1, the main focus here is Wann?

3.am: weekdays and calendar days

am is the contraction of an dem. In time expressions, it is very common before days of the week.

4.am with dates

Specific dates can also use am: am 3. Mai, am 12. Oktober, am 25. Dezember.

When spoken, the date is read as an ordinal number. Date forms are explained in more detail in the days, months and dates topic.

5.am with parts of the day

Many parts of the day use am.

These phrases answer Wann?

6.Important exception: in der Nacht

With Nacht, German normally does not use am, but in der Nacht.

At A1, it is useful to learn in der Nacht as a whole phrase.

7.am Wochenende

Another very common expression is am Wochenende. Here too, am marks a recognizable part of the calendar.

8.im: months

im is the contraction of in dem. Months very often use im.

9.im: seasons

Seasons also normally use im.

The question is again Wann? → im Sommer.

10.im with longer periods

im can also appear with certain longer periods: im Jahr 2026, im letzten Jahr, im nächsten Monat.

With a simple year number, however, German often uses no preposition: 2026 beginnt der Kurs.. Both patterns occur, but they are structurally different.

11.um: exact clock time

um is used very frequently for an exact clock time: um 7 Uhr, um 8:30 Uhr, um zwölf Uhr, um Mitternacht.

The core question is Um wie viel Uhr?

12.am or um?

am gives the day or a larger part of the day. um gives a precise point on the clock.

Together they mark different time levels:

am Montag answers “which day?”, um neun Uhr answers “what exact time?”

13.im or am?

A useful basic rule: am for weekday, date, part of the day; im for month or season.

The two prepositions can therefore mark different time levels in the same sentence.

14.Several time expressions in one sentence

German can combine several time expressions.

You can think of them as levels:

This helps keep the prepositions separate.

15.von … bis: beginning and end

von … bis marks a period with a starting point and an ending point: von Montag bis Freitag, von 8 Uhr bis 12 Uhr, von Januar bis März.

The structure is von + beginning, bis + end.

16.Parallel time expressions often have no article

In simple time ranges, von and bis often introduce bare time expressions: von Montag bis Freitag, von Januar bis März, von 8 bis 10 Uhr. No additional article is needed.

This makes the structure compact: von X bis Y.

17.vom … bis zum …

When the time expression contains an article or a more fully specified noun phrase, you often see vom … bis zum ….

Examples: vom Montag bis zum Freitag, vom 1. Mai bis zum 3. Mai.

In many everyday contexts, the shorter form von Montag bis Freitag is more natural. The longer form makes the grammatical structure visible.

18.bis can also stand alone

bis can mark the end of a period without von: bis Montag, bis morgen, bis 18 Uhr, bis nächste Woche.

bis often answers Bis wann?

19.von can mark the starting point

In some structures, von can also mark the beginning: von 8 Uhr an, von Montag an.

At A1, however, the clearest and most important pattern is von … bis …. This paired structure should be learned first.

20.Temporal prepositions and case

The forms am and im already contain dative forms: am = an dem, im = in dem. So you see am Montag, im Sommer.

um is an accusative preposition. In clock-time expressions, the case is usually not visible because there is no article: um acht Uhr.

For A1, the most practical approach is to learn each preposition together with the type of time expression it normally introduces.

21.Not every time expression needs a preposition

German also has time expressions without a preposition: heute, morgen, gestern.

With weekdays, the neutral standard form is usually am Montag. But in headings, calendars and short notes, the day may appear on its own.

Other expressions can also occur without am, im or um: nächste Woche, jeden Tag, dieses Jahr.

Temporal prepositions are important, but not every time expression is built with one.

22.jeden Tag vs am Montag

Recurring time expressions are explained in more detail in the frequency and routine topic.

23.morgens, abends and similar forms

Besides prepositional phrases, German has adverbs such as morgens, vormittags, nachmittags, abends, nachts.

These forms are especially important for routines and are developed further in the frequency topic.

24.Common mistakes

im Montag instead of am Montag

Weekdays normally use am: not im Montag, but am Montag.

am Juli instead of im Juli

Months normally use im: not am Juli, but im Juli.

am 8 Uhr instead of um 8 Uhr

Exact clock times use um: not am 8 Uhr, but um 8 Uhr.

am Nacht instead of in der Nacht

in der Nacht is the standard fixed expression. Not am Nacht.

von Montag zu Freitag

Use von … bis to mark the beginning and end of a period, not von … zu: von Montag bis Freitag.

Using one preposition for every time level

The type of time expression determines the typical preposition: am Montag, im Mai, um 10 Uhr. Do not use the same preposition for every time level.

25.A useful analysis method

For a simple time expression, use this sequence.

1. Type of time information: day / date? month / season? exact clock time? period with a beginning and end?
2. Basic pattern: day / date → am; month / season → im; clock time → um; beginning + end → von … bis.
3. Contractions: an dem → am, in dem → im, von dem → vom, zu dem → zum.
4. Exception: Nacht → in der Nacht.

The central idea: the type of time expression determines the typical preposition. Once you identify whether the phrase refers to a day, a month, an exact time or a time range, choosing between am, im, um and von … bis becomes much easier.