Edition 2023

Foto omschrijving: Girl blowing out candles on her birthday cake.

Which day has the most birthdays?

The date with most Dutch birthdays is 30 September. In 2023, as many as 44.1 thousand people blew out their birthday candles on the last day of September. September is also the month with the most birthdays (on average 42.7 thousand on each day), followed by May and June. Fewest people celebrate birthdays in December (38.8 thousand per day on average).

Op welke dag zijn de meeste mensen jarig? Which day has the most birthdays? januari / January februari / February maart / March april / April mei / May juni / June juli / July augustus / August september / September oktober / October november / November december / December Jarigen in Nederland / Birthdays in the Netherlands meestemost meer dan gemiddeldmore than average gemiddeldaverage minder dan gemiddeldfewer than average 1 2 3 4 5 6 7 8 9 11 12 13 14 15 16 17 18 19 10 22 23 24 25 26 27 28 29 30 31 20 21

Every day of the year, an average of just over 41 thousand people in the Netherlands celebrate their birthday. This number is higher towards the end of September. In addition to 30 September, 20, 21, 23, 24, 25, 28 and 29 September are all in the top ten dates of birth, which also includes 2 and 3 May. Fewest birthdays (9.7 thousand) fall on leap day, 29 February. 1 January is also unpopular (31.7 thousand birthdays). One reason for this may be that planned births, such as caesarean sections, are less likely to be planned on public holidays. This is probably also the reason that relatively few people have birthdays on Christmas and Boxing Day. If we exclude holidays, fewest people celebrate their birthdays on 2 January (36.2 thousand).

More young people have birthdays in late summer, older people in spring

It is mostly younger people aged up to 25 years who have birthdays in September. Birthdays of over-75s are more likely to fall in March and May. The period in which most babies are born has shifted: most people used to be born in spring, this has now shifted to late summer. Researchers think this may be the result of the contraceptive pill introduced in the 1960s, which made it easier to plan pregnancies. Most couples are said to prefer a spring baby, but do not take into account the fact that it may take time to become pregnant.

Birthdays per month1) by age group, 1 January 2023 (%)
birthday month 0-24 yrs 25-49 yrs 50-74 yrs 75 yrs and over Total
Jan 8.1 8.1 8.1 7.7 8.1
Feb 8.2 8.3 8.6 8.3 8.4
Mar 8.1 8.5 8.7 8.7 8.5
Apr 8.1 8.6 8.7 8.6 8.5
May 8.2 8.6 8.7 8.7 8.5
Jun 8.4 8.5 8.5 8.3 8.5
Jul 8.7 8.5 8.3 8.4 8.5
Aug 8.7 8.5 8.3 8.5 8.5
Sep 8.9 8.6 8.5 8.5 8.6
Oct 8.4 8.2 8.0 8.1 8.2
Nov 8.2 8.0 7.8 7.9 8.0
Dec 7.9 7.8 7.8 8.1 7.9
1) Adjusted for number of days per month.

Fewer and fewer births on Saturdays and Sundays

Today, fewer babies are born in weekends, more on weekdays. In 2022, 24.4 percent of all babies in the Netherlands were born in a weekend, fifty years ago this was 26.4 percent. In 2022, most babies were born on Fridays and fewest on Mondays. Fewer weekend babies may be the consequence of more mothers opting for hospital births than previously. This may result in more planned births taking place on weekdays as more midwives and other birthing staff are present in hospitals during the week than in weekends.

Birth days (%)
Geboortedag 2022 1972 1950
Monday 14.6 14.1 13.7
Tuesday 15.2 15.1 14.1
Wednesday 15.3 14.9 14.2
Thursday 15.2 14.8 14.4
Friday 15.3 14.7 14.6
. . .
Saturday 12.6 13.8 14.7
Sunday 11.8 12.6 14.2

To find out how many people share your birthday, and how many of them live in your municipality, go to our birthday calendar (Dutch only).


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Explanation of symbols

Explanation of symbols

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. figure is unknown, insufficiently reliable or confidential
* provisional figure
** revised provisional figure
(between two numbers) inclusive
0 (0.0) less than half of unit concerned
2016–2017 2016 to 2017 inclusive
2016/2017 average for the years 2016 up to and including 2017
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Concept & image editor

Irene van Kuik, Janneke Hendriks, Richard Jollie

With thanks to Hendrik Zuidhoek


Annelie Hakkenes (final editing)

Elma Wobma (general project leader)

Erik van den Berg

Gert Jan Wijma

Karolien van Wijk

Michel van Kooten

Paul de Winden

Saskia Stavenuiter

Sidney Vergouw


Gabriëlle de Vet, Lieneke Hoeksma, Frans Dinnissen


Ronald van der Bie

We thank all CBS colleagues who have contributed to this edition.