Prepositions of Time in Czech

In Brief

Czech does not match English at, on, and in word for word. It commonly uses v/ve + accusative for days and clock times (v pondělí, v pět hodin), v/ve + locative for months (v lednu), o + locative for occasions such as o víkendu, and za + accusative for a point in the future (za hodinu = “in an hour”). Learn each time phrase as a complete unit, including its case ending.

Overview

Prepositions of time connect an event with a day, month, clock time, occasion, or interval. In English, the choice often seems to depend on the size of the time unit: at five, on Monday, in January. Czech organizes these expressions differently. The same preposition v can correspond to all three English words, while the grammatical case determines the form that follows it.

A case is a change in the form of a noun or related word that shows its role in a phrase. This topic uses mainly the accusative (the form often used for a direct object, meaning the person or thing directly affected by an action) and the locative (a form used only after certain prepositions). You do not need to identify every ending immediately. At A1, the most useful approach is to recognize a few dependable patterns and memorize common calendar words in the form in which they actually occur.

These phrases appear constantly in schedules, invitations, opening hours, travel plans, and everyday questions: Kdy? (“When?”), V kolik hodin? (“At what time?”), and Za jak dlouho? (“How long from now?”). The important beginner contrast is between locating an event on the calendar and measuring forward from now.

How It Works

The core pattern

Meaning	Czech pattern	Example	English
on a named day	v/ve + accusative	v pondělí	on Monday
in a month	v/ve + locative	v lednu	in January
at a clock time	v/ve + accusative	v pět hodin	at five o’clock
at/during an occasion	o + locative	o víkendu	on/at the weekend
after a future interval	za + accusative	za hodinu	in an hour

The form ve is simply a pronunciation-friendly variant of v, not a different preposition. It is common before difficult consonant groups and in phrases such as ve středu, ve čtvrtek, and ve dvě hodiny.

Days of the week: v/ve + accusative

To say that something happens on a named day, use v or ve with the accusative. Several day names have an accusative form that looks identical to their basic dictionary form, so the case is not always visible. The feminine names make the change easier to see: středa → ve středu, sobota → v sobotu, neděle → v neděli.

Day	Time phrase	English
pondělí	v pondělí	on Monday
úterý	v úterý	on Tuesday
středa	ve středu	on Wednesday
čtvrtek	ve čtvrtek	on Thursday
pátek	v pátek	on Friday
sobota	v sobotu	on Saturday
neděle	v neděli	on Sunday

Czech normally uses the same pattern whether you mean one particular day or a repeated schedule. Context supplies the difference: V pondělí mám schůzku can mean “I have a meeting on Monday,” while V pondělí máme zavřeno may describe what happens every Monday. To make repetition explicit, Czech can use každé pondělí (“every Monday”), with no preposition.

Months: v/ve + locative

Month names follow v/ve + locative. The ending is part of the phrase, and some stems also change. For example, červenec becomes v červenci and prosinec becomes v prosinci.

Month	Time phrase	Month	Time phrase
leden	v lednu	červenec	v červenci
únor	v únoru	srpen	v srpnu
březen	v březnu	září	v září
duben	v dubnu	říjen	v říjnu
květen	v květnu	listopad	v listopadu
červen	v červnu	prosinec	v prosinci

Years are also commonly introduced with v, but Czech usually includes rok (“year”) in the locative: v roce 2026. A bare date, however, normally has no v: Narodil se 5. května (“He was born on May 5”).

Clock times: v/ve + accusative

For a precise clock time, Czech again uses v/ve, but now with the accusative rather than the locative:

• v jednu hodinu — at one o’clock
• ve dvě hodiny — at two o’clock
• ve tři hodiny — at three o’clock
• ve čtyři hodiny — at four o’clock
• v pět hodin — at five o’clock

In ordinary conversation, hodinu/hodiny/hodin is often omitted when the meaning is clear: Sejdeme se v pět (“We’ll meet at five”). The question is V kolik hodin? or simply V kolik? (“At what time?”).

Do not transfer English at directly as o. The normal expression for “at five” is v pět, not o pěti. The preposition o does occur in a small number of point-in-time expressions, especially o půlnoci (“at midnight”), but that does not make it the general clock-time preposition.

Occasions and periods: o + locative

Use o + locative in several established expressions for occasions or periods:

• o víkendu — on/at the weekend
• o prázdninách — during the holidays
• o Vánocích — at Christmas
• o půlnoci — at midnight

These are best learned as complete phrases. O has other meanings in Czech—such as “about” in mluvit o filmu (“to talk about a film”)—but the time meaning is clear when the following word names an occasion or period.

A point in the future: za + accusative

Use za + accusative when you count forward by an amount of time. It answers Za jak dlouho? (“How long from now?”):

• za minutu — in a minute
• za hodinu — in an hour
• za dva dny — in two days
• za týden — in a week
• za měsíc — in a month

This is one of the places where English can be misleading. English in an hour may refer either to a future point or to the time needed to complete something. Czech can use za for both, but the verb and context distinguish them:

• Přijdu za hodinu. — I’ll come in an hour. (one hour from now)
• Udělám to za hodinu. — I’ll do it in an hour. (it will take me one hour)

For “after” a named event, Czech normally uses a different construction, po + locative: po obědě (“after lunch”), po práci (“after work”). Therefore, “I’ll call after lunch” is Zavolám po obědě, not Zavolám za oběd.

Time expressions with no preposition

Not every English time expression needs a Czech preposition. Common parts of the day are often plain adverbs (words that tell you when or how something happens):

Czech	English
ráno	in the morning
dopoledne	in the morning / before noon
odpoledne	in the afternoon
večer	in the evening
dnes	today
zítra	tomorrow

The important exception in this group is v noci (“at night”), which does use v + locative. These fixed choices are another reason not to translate English prepositions one at a time.

Examples in Context

Czech	English	Note
V pondělí začínám novou práci.	I’m starting a new job on Monday.	Named day: v + accusative
Ve středu máme hodinu češtiny.	We have a Czech lesson on Wednesday.	středa → středu
V neděli jsou obchody otevřené.	The shops are open on Sunday.	neděle → neděli
V lednu bývá v Praze zima.	It is usually cold in Prague in January.	Month: v + locative
V červenci jedeme k moři.	We are going to the seaside in July.	červenec → červenci
Narodila se v roce 1998.	She was born in 1998.	Year with locative roce
Schůzka začíná v pět hodin.	The meeting starts at five o’clock.	Clock time: v + accusative
Sejdeme se ve dvě před nádražím.	We’ll meet at two in front of the station.	hodiny is understood
Vlak přijede o půlnoci.	The train will arrive at midnight.	Fixed o + locative phrase
O víkendu navštívíme rodiče.	We’ll visit our parents at the weekend.	Occasion or period
O Vánocích býváme doma.	We are usually at home at Christmas.	Holiday period
Autobus odjede za deset minut.	The bus will leave in ten minutes.	Ten minutes from now
Vrátím se za týden.	I’ll return in a week.	Future point
Napsala ten e-mail za pět minut.	She wrote the email in five minutes.	Time needed for completion
Ráno piju kávu, ale v noci kávu nepiju.	I drink coffee in the morning, but I do not drink coffee at night.	No preposition with ráno; v with noc

Common Mistakes

Translating English at, on, and in directly

• Wrong: o pět hodin for “at five o’clock”
• Right: v pět hodin
• Why: Czech clock times normally use v/ve + accusative. English at does not automatically correspond to Czech o.

Using the dictionary form after a preposition

• Wrong: ve středa, v leden, o víkend
• Right: ve středu, v lednu, o víkendu
• Why: Czech prepositions require a case. Learn the changed form together with the preposition instead of attaching a preposition to the dictionary form.

Confusing a future interval with “after an event”

• Wrong: Zavolám za oběd. for “I’ll call after lunch.”
• Right: Zavolám po obědě.
• Why: Za + accusative counts an amount of time forward: za hodinu. Po + locative places something after an event: po obědě.

Adding v to every part of the day

• Wrong: v ráno, v večer
• Right: ráno, večer
• Why: These are normally used without a preposition. Memorize the contrast ráno but v noci.

Using a month form where a day form is needed

• Wrong: v střede or ve středě for “on Wednesday”
• Right: ve středu
• Why: Named weekdays use the accusative in this pattern. The locative pattern belongs to months and some other time expressions, not to weekdays.

Usage Notes

In speech, shorter clock expressions are normal: v šest rather than v šest hodin. The full version is useful when clarity matters, and official timetables may use the 24-hour clock. Written times such as v 18.30 are read according to the surrounding sentence and local convention.

For weekends, o víkendu is a neutral standard expression meaning “at/on the weekend.” Other prepositions change the viewpoint. Na víkend jedeme do Brna means “We’re going to Brno for the weekend,” presenting the weekend as the planned duration or destination period. Přes víkend means “over/during the weekend.” These phrases overlap in translation but are not interchangeable in every sentence.

Czech often leaves number—singular or repeated—unstated in calendar phrases. V pátek chodím plavat is naturally understood as a habitual “I go swimming on Fridays,” while V pátek půjdu plavat points to the coming Friday because of the future verb. Use každý pátek (“every Friday”) when you want to remove any doubt.

Beyond the Basics

You do not need to master the following contrasts at A1, but you will meet them often as your Czech expands.

Czech has a wider network of temporal prepositions. Od + genitive marks a starting point (od pondělí — “from Monday”), do + genitive marks an endpoint (do pátku — “until/by Friday”), před + instrumental means “before” (před obědem), and po + locative means “after” (po obědě). The genitive and instrumental are additional cases with their own endings.

The preposition za also has an older or more formal temporal pattern with the genitive, meaning “during the time or rule of”: za války (“during the war”), za první republiky (“during the First Czechoslovak Republic”), and za Karla IV. (“in the time of Charles IV”). This is different from beginner za + accusative, which measures an interval: za rok (“in a year”). The ending and meaning must be considered together.

Some expressions choose a preposition according to viewpoint rather than a simple calendar category. Compare o Vánocích (“at Christmas,” the holiday period), na Vánoce (“for Christmas” or “at Christmas,” often with a plan, gift, or destination), and před Vánocemi (“before Christmas”). Similarly, v létě means “in summer,” while na léto often means “for the summer,” as in arranging a summer job or accommodation.

Dates have their own case pattern. In 10. července (“on July 10”), the ordinal day number and month are understood in a date construction, and no equivalent of English on is required. Formal notices may use dne 10. července (“on the 10th of July”). Treat dates as a separate pattern rather than extending the weekday rule mechanically.

Practice Tips

1. Build phrases, not word lists. Write pondělí — v pondělí, leden — v lednu, and hodina — za hodinu. Saying both forms aloud helps you remember the required ending.
2. Sort examples by question. Answer Kdy? with calendar phrases such as v pátek and v červnu. Answer Za jak dlouho? with intervals such as za deset minut. This separates “when?” from “how long from now?”
3. Describe your real week. Make seven short sentences about appointments, work, exercise, or travel. Add two month phrases, two clock times, and two future intervals. Real plans make the contrasts easier to retain than isolated drills.

Related Concepts

• Prerequisite: Case System Introduction — explains why Czech words change form after prepositions.