How do you say dates in English?

Use an ordinal for the day and the full month name. British speech prefers the third of March (two thousand and) nineteen. American speech prefers March third, twenty nineteen. The preposition is on if you include the day (on the 3rd of March) and in if you only name the month or year (in March, in 2019).

What is the difference between British and American date order?

British English puts the day first: 3 March 2019, said the third of March. American English puts the month first: March 3, 2019, said March third. In number-only dates this matters: 4/3/2019 is 4 March in Britain and April 3 in the United States. Spell the month in international writing.

Do you say on March or in March?

In March. On is for a day: on Monday, on 3 March, on the 3rd of March. In is for a month, a year, a season, or a decade: in March, in 2019, in winter, in the 1990s. On March is the mix to avoid unless a day number follows in American writing (on March 3).

Why is it the 3rd of March and not 3 March in speech?

Speech likes the ordinal and, in British English, of: the third of March. Writing can be more compact: 3 March 2019. Both refer to the same day. American speech usually drops of and often drops the: March third.

When do dates take a capital letter?

Always on the weekday and the month: Monday, March. The year is just a number. Seasons are usually lowercase (in spring) unless they are part of a title. The ordinal suffix is lowercase: 3rd, 21st.

English grammar · Beginner

Dates in English: How to Say and Write Them

Written by Eleanor Whitfield, Lead English Curriculum Editor · Reviewed September 2026

English dates combine an ordinal day, a month name, and a year, and they take the preposition on for a day or a full date, in for a month or a year, and no preposition with last, next, this, and every. British English writes and often says the day first (3 March 2019, the third of March); American English writes the month first (March 3, 2019) and says March third. Months and days of the week take a capital letter.

The recital is on the 3rd of March 2019.

on plus the with an ordinal, British spoken order day then month

What it is

A date in English is a day, a month, and usually a year, in that conceptual order even when the written sequence changes. You say the day as an ordinal (the third, the twenty-first), the month as a capitalised name (March, October), and the year in two chunks for numbers after 2000 (twenty nineteen, two thousand and nineteen). The preposition is on when you name a day or a full date (on Monday, on 3 March), in when you name a month, a year, or a decade (in March, in 2019, in the 1990s), and nothing at all before last Friday, next March, this year, or every Tuesday.

The lease ends on Monday the 3rd of March 2019. (On for the dated day; the before the ordinal; of before the month in this spoken British form.)

How to spot it

A written date is a day number plus a month word or number plus a year. A spoken date almost always uses an ordinal for the day and the full month name. If you see a bare number sequence (3/3/2019), you still have to know which system wrote it.

on Monday (on plus a day of the week)
on the 3rd of March (british spoken date with the and of)
in 2019 (in plus a year, no on)
March 3, 2019 (american written order, month then day, comma before the year)

Days of the week and months always take a capital letter. The is used in speech before the ordinal (the third of March) and often dropped in British writing (3 March 2019).

Dates in English Quick Reference

Saying dates, writing dates, and choosing the preposition

What you mean	Say	Write
A weekday	on Monday	Monday
A dated day, British	the third of March	3 March 2019
A dated day, American	March third	March 3, 2019
A month	in March	March 2019
A year	in twenty nineteen	in 2019
A decade	in the nineteen nineties	in the 1990s
Last / next / this / every	last Monday, next March	no preposition
A range	from 3 to 7 March	3-7 March 2019

Common Dates in English Examples in English

Dates in the three jobs they actually do: naming a day, placing it in a month or year, and writing it down:

Naming a Day

The preview is on Thursday.: on plus a weekday
We sign the docket on the 21st of June.: on plus the + ordinal + of + month
Her birthday falls on a Sunday this year.: on a Sunday: a weekday used as a date-like point
The gallery is closed on public holidays.: on plus a class of days

On is the preposition for any named day, whether you give the weekday, the calendar date, or a holiday.

Months, Years, and Longer Spans

The kiln was installed in March.: in plus a month, no on
They opened the annex in 2019.: in plus a year
She trained as a conservator in the 1990s.: in the + decade
We glaze bowls in winter, not in high summer.: in plus a season

If the unit is larger than a day, the preposition is in. A full date that still names the day goes back to on: on 3 March 2019.

Spoken Ordinals

the 1st of May: first, spoken the first of May
the 2nd of May: second
the 3rd of May: third
the 21st of May: twenty-first, not twenty-one

The written abbreviations 1st, 2nd, 3rd, 4th follow the spoken ordinal. Years are not ordinals: two thousand and nineteen, not the 2019th.

No Preposition, and All-Day Phrases

The crate arrived last Tuesday.: last + weekday, no on
Next March we rewire the annex.: next + month, no in
The ushers meet every Thursday.: every + weekday, no on
This year the recital moves to October.: this year, no in

Last, next, this, and every already place the time, so on and in stay out. Yesterday, today, and tomorrow also stand alone.

How Dates Work

Four habits cover speech, writing, prepositions, and the capital letter.

Say an Ordinal, Write a Number

In speech the day is an ordinal: the third of March, March third. In writing you can use the number (3 March, March 3) or the ordinal abbreviation (3rd March). The before the ordinal is normal in speech and in of-phrases (the 3rd of March); British writing often drops both the and of (3 March 2019). Years after 2000 can be twenty nineteen or two thousand and nineteen; years before 2000 split in two (nineteen ninety-nine).

We'll glaze the bowls on the twenty-first of October.

spoken ordinal twenty-first, not twenty-one

Speak the third; write 3 or 3rd.

On for Days, In for Months and Years

On attaches to a weekday or a dated day: on Monday, on 3 March, on my birthday. In attaches to a month, a year, a season, or a decade: in March, in 2019, in spring, in the 1990s. At is not a date preposition except in a few clock and holiday phrases taught elsewhere (at Christmas, at the weekend in British English). Mixing them (in Monday, on 2019) is the basic error.

The lease started on 3 March in 2019.

on for the dated day, in for the year if you split them

On the day. In the month or year.

Last, Next, This, and Every Need No Preposition

These four words already tell the listener which Monday or which March you mean, so adding on or in is extra: last Monday, next March, this Thursday, every June. The same ban covers yesterday, today, tomorrow, and tonight. On last Monday and in next year are the forms to unlearn.

The conservator flies in next Tuesday.

next Tuesday, no on

Last/next/this/every + time word, no on or in.

Capitalise Months and Days

Monday, Thursday, March, and October take a capital letter in every position, not only at the start of a sentence. The year does not. Seasons are usually lowercase in British English (in spring) unless they are part of a title. The ordinal abbreviation takes a lowercase suffix: 3rd, not 3RD, except in all-caps design.

Rehearsals start on Monday, 4 October.

monday and october capitalised, no extra the needed in this written form

Capital days, capital months.

Common Mistakes with Dates in English

Incorrect: The recital is in Monday.

Correct: The recital is on Monday.

A named day takes on, not in. In is for months, years, seasons, and decades: in March, in 2019.

Incorrect: She was born on 2019.

Correct: She was born in 2019.

A year is a span, so it takes in. On 2019 treats the year as if it were a single day.

Incorrect: We open the kiln on next Tuesday.

Correct: We open the kiln next Tuesday.

Next, last, this, and every already place the day. Adding on is extra and sounds non-native.

Incorrect: The meeting is on the 3 march.

Correct: The meeting is on the 3rd of March. / The meeting is on 3 March.

March takes a capital, and a spoken or mixed form needs the ordinal (3rd) and usually of. A British written form can be on 3 March, with a capital M and no the.

British and American Order, Spoken and Written

The same date can look like two different numbers if you do not know which system wrote it.

British order: day, month, year

British writing prefers 3 March 2019 or 3rd March 2019, with no comma required. Speech prefers the third of March (two thousand and) nineteen. All-number dates are day/month/year: 3/3/2019 is the third of March.

3 March 2019: standard British written form
the 3rd of March 2019: british spoken form written out
3/3/19: day first; ambiguous once the day is past 12

A comma after the month is not required in British style and often looks American.

American order: month, day, year

American writing prefers March 3, 2019, with a comma before the year. Speech prefers March third or March the third. All-number dates are month/day/year: 3/3/2019 is March third; 3/4/2019 is March fourth, not the third of April.

March 3, 2019: standard American written form, comma before the year
March 3rd: american short written form without the year
3/4/2019 (US): march fourth in american order, not 3 april

In international writing, spell the month (3 March 2019 or March 3, 2019) so that 03/04/2019 cannot flip.

Years, decades, and centuries

In 2019, in the 2010s, in the twenty-first century. The decade takes the: in the 1990s. From 2000 to 2009, two thousand and... is still heard; from 2010 onwards twenty twelve is the usual spoken form. BC/AD or BCE/CE follow the year: 44 BCE.

in twenty twelve: 2012 spoken as twenty twelve
in two thousand and eight: 2008 still often split with and
in the early 2010s: the + decade, early as a modifier

Do not put on before a year. On 2019 is not English.

Quick Check: Dates in English

Fill the gap with on, in, or nothing, and write the date as asked.

1. The preview is ___ Thursday.

Answer: on

weekday takes on

2. They opened the annex ___ 2019.

Answer: in

year takes in

3. The conservator flies in ___ next Tuesday.

Answer: nothing

next already places the day

4. Say 3 March the British way.

Answer: the third of March

the + ordinal + of + month

5. Write 3 March 2019 the usual American way.

Answer: March 3, 2019

month, day, comma, year

Dates in English FAQs

How do you say dates in English?: Use an ordinal for the day and the full month name. British speech prefers the third of March (two thousand and) nineteen. American speech prefers March third, twenty nineteen. The preposition is on if you include the day (on the 3rd of March) and in if you only name the month or year (in March, in 2019).
What is the difference between British and American date order?: British English puts the day first: 3 March 2019, said the third of March. American English puts the month first: March 3, 2019, said March third. In number-only dates this matters: 4/3/2019 is 4 March in Britain and April 3 in the United States. Spell the month in international writing.
Do you say on March or in March?: In March. On is for a day: on Monday, on 3 March, on the 3rd of March. In is for a month, a year, a season, or a decade: in March, in 2019, in winter, in the 1990s. On March is the mix to avoid unless a day number follows in American writing (on March 3).
Why is it the 3rd of March and not 3 March in speech?: Speech likes the ordinal and, in British English, of: the third of March. Writing can be more compact: 3 March 2019. Both refer to the same day. American speech usually drops of and often drops the: March third.
When do dates take a capital letter?: Always on the weekday and the month: Monday, March. The year is just a number. Seasons are usually lowercase (in spring) unless they are part of a title. The ordinal suffix is lowercase: 3rd, 21st.