How do you phrase the date?

Hoe formuleer je de datum?


Leren hoe je een datum correct formuleert met dagen, maanden en feestdagen.

(Learning how to correctly formulate a date using days, months and holidays.)

What are you learning here?

  • How to say days, months and full dates in Dutch.
  • When to use op and when to use in.
  • How to talk about holidays and special dates.
  • How to answer and ask: Welke dag is het vandaag?

1. The three building blocks

To say a date in Dutch, you combine three elements:

  • Dag van de week (Monday, Tuesday…)
  • Dag van de maand (1, 2, 3…)
  • Maand (January, February…)

In a full written date the order is always:

  • dag (nummer) + maand + jaar
    12 augustus 2023

If you add the day of the week, it comes in front:

  • dag van de week + dag (nummer) + maand (+ jaar)
    Maandag 3 april 2025

2. When to use op and when to use in

The main rule is simple. Think in two questions:

  1. Do I talk about a specific day? → use op.
  2. Do I talk about a period (month or year)? → use in.
Use Form Example (Dutch) Meaning (English)
Day of the week op + maandag / dinsdag … Ik werk op maandag. I work on Mondays.
Specific calendar date op + 10 maart / 25 december … Mijn verjaardag is op 10 maart. My birthday is on March 10.
Month in + juli / april … Ik heb vakantie in juli. I have vacation in July.
Year in + 2024 / 2025 … Ik begin in 2026 met mijn nieuwe baan. I start my new job in 2026.

Self-check: If you can answer in English with “on … day/date”, you almost always need op in Dutch. If you answer with “in … month/year”, you need in.

3. Full dates in sentences

When you talk about a specific event on a specific date, combine everything:

  • op + dag van de week + dag (nummer) + maand + jaar

Examples:

  • We hebben een teamvergadering op donderdag 3 april 2025.
    We have a team meeting on Thursday, April 3, 2025.
  • Ik heb mijn examen op dinsdag 12 september 2024.
    I have my exam on Tuesday, September 12, 2024.

You can leave out the day of the week if it is not important:

  • We hebben een teamvergadering op 3 april 2025.

4. Talking about today, tomorrow, dates

Very common questions and answers:

  • Welke dag is het vandaag? – What day is it today?
  • Het is donderdag 12 juli. – It is Thursday, July 12.

Structure of the answer:

  • Het is + dag van de week + dag (nummer) + maand (+ jaar)

Examples:

  • Het is maandag 25 december.
  • Het is vrijdag 10 mei 2024.

Notice: in this type of answer we normally do not use op or in. We only say the date.

5. Holidays: with or without op?

With holidays you see two patterns. Both are used.

Pattern Form Example
Holiday + date (no preposition) Feestdag + dag + maand Kerstmis is 25 december.
Holiday on a specific date Feestdag is op + dag + maand Kerstmis is op 25 december.

Both are correct. At A1 level, it is safe to use:

  • Feestdag + is op + datum
    Pasen is op 31 maart 2024.

When you talk about what you do that day, you again use op:

  • Wij werken niet, want het is Pasen op 31 maart 2024.

6. Typical problems and how to avoid them

  • Problem 1: Using in with days of the week
    Ik werk in maandag.
    Ik werk op maandag.
  • Problem 2: Using op with months or years
    Ik heb vakantie op juli.
    Ik heb vakantie in juli.
  • Problem 3: English word order in dates
    English: April 3, 2025
    Dutch: 3 april 2025 (day first, then month)
  • Problem 4: Adding a preposition in short answers with dates
    To the question Welke dag is het vandaag?
    Het is op donderdag 12 juli.
    Het is donderdag 12 juli. (no op)

7. Quick self-check

  1. You talk about a period like a month or a year.
    • Do you use op or in?
    • Example: “I start my new job in 2026.” → Ik begin met mijn nieuwe baan in 2026.
  2. You talk about a specific day or full date.
    • Do you use op or in?
    • Example: “The meeting is on Monday, April 3.” → De vergadering is op maandag 3 april.
  3. You answer the question Welke dag is het vandaag?
    • Do you add op?
    • Correct form: Het is maandag 25 december.

If you can answer these three points correctly, you control the basic system for dates in Dutch.

  1. Days of the week: Use 'op' + day name, e.g. 'op maandag'.
  2. Months and years: Use 'in' + month or year, e.g. 'in januari', 'in 2025'.
  3. Full dates: Day + month + year, e.g. '21 april 2023'.
Vorm (Form)Voorbeeld (Example)
Volledige datum (Full date)12 augustus 2023
Datum zonder jaartal (Date without year)5 juli
Datum met dag van de week (Date with day of the week)Maandag 3 april
Vraag (Question)Welke dag is het vandaag? Het is donderdag 12 juli.

Exceptions!

  1. Holidays often do not use a preposition, e.g. 'Kerstmis is op 25 december'.

Exercise 1: Multiple choice

Instruction: Choose the correct answer

Fetching your corrections... Please don't close this page yet.

1. Wij hebben ons teamoverleg ___ maandag 3 april.

We have our team meeting ___ Monday, 3 April.

2. Ik ga ___ juli op vakantie; ik vertrek op vrijdag 5 juli.

I'm going on holiday ___ July; I'm leaving on Friday, 5 July.

3. Mijn inburgeringsexamen is ___ donderdag 12 september 2024.

My integration exam is ___ Thursday, 12 September 2024.

4. Kerstmis is ___ 25 december en Nieuwjaar is op 1 januari.

Christmas is ___ 25 December and New Year's Day is on 1 January.

Exercise 2: Rewrite the phrases

Instruction: Rewrite the sentences with a correct date or time indication. Use: on + day (for day of the week), in + month/year, or a full date (day + month + year).

Fetching your corrections... Please don't close this page yet.

Show/Hide translation Show/Hide hints
  1. Hint Hint (op) Ik heb vakantie. Het is 3-8-2024.
    ⇒ ______________________________________________________________________________________________________________ Example
    Ik heb vakantie op 3 augustus 2024.
    (I am on vacation on 3 August 2024.)
  2. Hint Hint (in) Wij beginnen de nieuwe cursus 2025.
    ⇒ ______________________________________________________________________________________________________________ Example
    Wij beginnen de nieuwe cursus in 2025.
    (We start the new course in 2025.)
  3. Hint Hint (volledige datum) Ik werk maandag. (schrijf met een volledige datum: 15-1-2025)
    ⇒ ______________________________________________________________________________________________________________ Example
    Ik werk op donderdag 15 januari 2025.
    (I work on Thursday 15 January 2025.)
  4. Hint Hint (op) Het feest is vrijdag. Het is 10 mei.
    ⇒ ______________________________________________________________________________________________________________ Example
    Het feest is op vrijdag 10 mei.
    (The party is on Friday 10 May.)
  5. Hint Hint (in) Ik ga naar Nederland juli.
    ⇒ ______________________________________________________________________________________________________________ Example
    Ik ga in juli naar Nederland.
    (I am going to the Netherlands in July.)
  6. Hint Hint (Welke) Welke dag is het vandaag? Het is 25-12.
    ⇒ ______________________________________________________________________________________________________________ Example
    Welke dag is het vandaag? Het is maandag 25 december.
    (What day is it today? It is Monday 25 December.)

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This content has been designed and reviewed by the coLanguage pedagogical team: About coLanguage

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Kato De Paepe

Business and languages

KdG University of Applied Sciences and Arts Antwerp

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Last Updated:

Thursday, 16/04/2026 17:51