The drink at the centre of Finland’s largest drinking occasion is alcohol-free, and it is there for exactly that reason.
Sima became the Vappu drink around 1900 because the temperance movement was strong in every social class at the time and wanted a festive option with nothing in it. It worked. It is still on the table.1
That is the whole day in one object. Vappu is not one holiday with one origin; it is three of them that landed on the same date and never sorted it out.

Three holidays, one date
Katriina Siivonen, professor of ethnology, describes the traditions as arriving from different directions and winding round each other on the day.2 They are still separable.
| what it is | when it arrived | what it looks like now |
|---|---|---|
| what it isA saint’s day | when it arrivedthe Middle Ages | what it looks like nowthe name, and the date |
| what it isInternational Workers’ Day | when it arrived1890 in Finland | what it looks like nowmarches and speeches on 1 May |
| what it isThe student spring carnival | when it arrived1800s | what it looks like nowthe caps, the crowd, 30 April evening |
| what it isMarket tradition | when it arrived1920s onward | what it looks like nowballoons, streamers, whistles |
The saint came first. Vappu is the Finnish form of the Germanic name Walburg, from elements meaning rule and stronghold, and the name day on 1 May has been kept in Finland since the Middle Ages as the day the abbess Walburga was canonised. The name entered the Finnish almanac in 1908, and had already appeared there from 1871 to 1880 spelled Wappu.3
What has fallen away is the farming layer. The customs tied to letting the cattle out for the first time, which sat on the same date, are gone.2
The workers’ half is a law, not a custom
This is the part nobody mentions to visitors, and it is a matter of public record.
Laki vapunpäivän järjestämisestä työntekijäin vapaapäiväksi eräissä tapauksissa, statute 272 of 1944, applied from 1 May 1944. It is three sections long.4
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1Section 1: the day offA worker whose job gives them Sundays free must also be given 1 May off, including when it falls on a weekday.
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2Section 2: the payWhere Sunday work is paid at a raised rate by law, 1 May work is paid on the same basis, weekday or not.
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3Section 3: the fineAn employer who refuses to give the day is punished by a fine. Plainly written, and still in force.
Finland passed that in 1944, during the war. Hold onto that while watching the fountain on 30 April: the reason anybody has the following day free is a wartime statute about Sunday pay.
The evening of 30 April
The carnival runs to a clock, and the clock is the same across the country even though the statue is only in Helsinki.
18:00. The student union of the University of Helsinki puts a white cap on the head of Havis Amanda, Ville Vallgren’s bronze on the Market Square. Everyone in the crowd puts theirs on at the same moment. Yle’s standing figure for the crowd is 60,000 to 80,000, and the cap usually disappears from the statue’s head overnight.5
The cap is not a student cap. The ylioppilaslakki comes with passing the matriculation exam, the national school-leaving exam run by its own statutory board at the end of upper secondary school, and people keep it for the rest of their lives.6 Which is why the crowd includes sixty-year-olds in a hat they got at eighteen, and why a white cap tells you nothing about whether somebody is at university.
Then the city. Streamers, balloons, boiler suits in student-society colours, and a great deal of noise from a population that spends the rest of the year not making any.

What is on the table
Three things, all of them older than the holiday they are attached to.
Sima and tippaleipä became a pair in the 1800s, served together in middle-class homes, and by the end of that century both had attached themselves to Vappu.12
What is actually said
The greeting covers both days and everybody, which makes this one of the easiest Finnish occasions to get right.
| Finnish | English | when |
|---|---|---|
| FinnishHauskaa vappua | EnglishHappy Vappu | whenthe whole period, to anyone |
| FinnishHyvää vappua | EnglishHappy Vappu | whenidentical in use |
| FinnishKippis | EnglishCheers | whenraising anything, including sima |
| FinnishVappuaatto | EnglishVappu eve | when30 April, the evening that matters |
| FinnishLakitus | EnglishThe capping | whenthe 18:00 ceremony |
| FinnishYlioppilaslakki | EnglishThe white cap | whenwhat everyone is wearing |
| FinnishVappupiknik | EnglishThe 1 May picnic | whenKaivopuisto in Helsinki, a park near you elsewhere |

The capital letter
One detail that is genuinely useful and that no phrasebook carries.
The holiday is written vappu, lowercase. The name day is written Vappu, with a capital. So Hauskaa vappua for the festival, and, in the Institute’s own example, Tervetuloa Vapun päivän kahveille when the point is that somebody called Vappu has a name day.3
This is the standard Finnish rule for festival names and it catches out nearly every learner, because English capitalises Christmas and Easter without hesitation. Finnish does not: joulu, pääsiäinen, juhannus, vappu, all lowercase.

One practical note to end on, because it catches people out every year. 1 May is a public holiday and 30 April evening empties the shops. Buy the sima, the doughnuts and anything you plan to sit in a park with on 29 April, put Hauskaa vappua in your mouth ready, and do not expect the supermarket to still have strawberries in it on the day.
Footnotes
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Miksi juuri sima, tippaleipä ja munkki kuuluvat vappuun? - Yle, quoting Anni Pelkonen of the Hotel and Restaurant Museum on the temperance movement and on sima before 1300 ↩
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Tippaleipiä, simaa, ilmapalloja - vappu on eri perinteiden sekamelskaa - Yle, quoting Professor Katriina Siivonen on the layered origins and the lost cattle customs ↩
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Vappu - Institute for the Languages of Finland, on the name, the almanac dates and the capitalisation rule ↩
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Laki vapunpäivän järjestämisestä työntekijäin vapaapäiväksi eräissä tapauksissa 272/1944 - Finlex. Three sections, applied from 1 May 1944 ↩
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Manta sai lakkinsa ja bileet alkoivat Helsingin Kauppatorilla - Yle Uusimaa, on the 18:00 capping by HYY and the 60,000 to 80,000 crowd ↩
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Tutkinnon suorittaminen: tietoa kokelaalle - the Matriculation Examination Board, which runs the exam the white cap marks ↩










