National Lemonade Day falls on 20 August, a Thursday in 2026. It is an unofficial food holiday with no sponsor and no traceable founder, and it is not the same thing as Lemonade Day, the American youth-business programme Michael Holthouse launched in Houston in 2007, which runs in spring. This page is about the drink, which is older and stranger than the folklore suggests.

What is National Lemonade Day?

National Lemonade Day is a date on the food-holiday calendar rather than an observance with an owner. It turns up on aggregator sites — one lists it among ten things marked on 20 August — but no proclamation, sponsor, trade body or registration sits behind it, and other large calendars do not carry a lemonade day on that date at all. Nothing is organised centrally, nothing closes, and nobody is in charge. What the date gives you is a prompt: an afternoon in late August, when the weather still wants cold drinks, to make something better than the powdered version.

That vagueness is not a reason to dismiss it. Unofficial food days are how most people meet a subject, and lemonade rewards the attention. It has a documented history running back eight centuries, a starring role in one of the odder arguments in the history of epidemiology, and an active legal life in the United States, where the right of a nine-year-old to sell a cup of it has occupied state legislatures since 2017.

Two days, one name

Lemonade Day is a real registered non-profit programme, and it is not this. Michael Holthouse, a Houston entrepreneur, started it in 2007 through his foundation Prepared 4 Life after helping his daughter set up a stand to buy a pet turtle. Some 2,700 Houston children took part in the first year. It now runs in around ninety communities across the United States, Canada, Bermuda and several US military bases, and the organisation says it has served more than 1.5 million young people since.

Its date moves. Secondary calendars describe it as the first Sunday in May, but each licensed market picks its own day: Lemonade Day Houston is Saturday 9 May in 2026, which is not the first Sunday of that month. Nothing about the programme points at 20 August, and the organisation does not have the word National in its name.

The two get welded together constantly, including by calendar sites that file the 2007 Houston founding under an August date its founders never chose. If you have read that National Lemonade Day was invented in 2007 by Michael Holthouse and is held on 20 August, you have read two true halves of two different stories. One is a spring programme about children and money; the other is a food-calendar entry about a drink, with nobody’s name on it.

Where lemonade actually comes from

Not America. The earliest known recipe for a lemon drink appears in a twelfth-century Egyptian treatise, On Lemon, Its Drinking and Use, by the court physician Ibn Jumay’. In thirteenth-century Mamluk Egypt people drank a mixture of lemons, dates and honey, along with a sweetened lemon-juice drink called qatarmizat — a recognisable ancestor of the thing in your jug. Medieval, then, rather than ancient. The folk claim that lemonade reaches back to antiquity and the equally common claim that Americans invented it are wrong at opposite ends of the same story.

An Egyptian recipe for lemonade was in use in England by 1663, and Samuel Pepys was drinking it in the 1660s. In Paris the trade became a regulated occupation: by 1676 a Compagnie de Limonadiers was selling lemonade in the city, its vendors walking the streets with tanks strapped to their backs, dispensing cups to anyone with a coin. Lemonade was a commercial urban drink with its own guild in Europe a century before the United States existed.

Those Parisian sellers are the basis of a genuinely strange argument. In Food Fights and Culture Wars, published in 2016, Tom Nealon proposed that the city’s lemonade craze is why Paris escaped the plague outbreak of 1668 that struck other European cities. Limonene, the oil in lemon peel, is a natural insecticide, and streets and sewers heaped with discarded peel would have been hostile ground for the fleas that carry plague between rats and people.

It is a good story with real chemistry behind it — the US Environmental Protection Agency still registers insecticides built on limonene, and it turns up in flea treatments for pets. But Nealon is candid that the conclusion is inference rather than evidence, writing that his conclusions may be suspect even where his facts are not, and no historian has confirmed it. Treat it as an appealing hypothesis about why one city was spared, not as a fact about lemonade.

Why the lemonade stand is a legal question in America

A child’s lemonade stand is, strictly speaking, an unlicensed food business, and American towns have occasionally enforced that. In June 2015 police in Overton, Texas told children running a stand they would need a permit and a check from the health department. Health codes are not absurd in themselves: a 1941 outbreak in Chicago infected twelve people with poliovirus, five of whom were paralysed, and was traced to a child’s lemonade stand. Applying them to a card table on a driveway, though, produced enough public anger to move legislatures.

Utah went first, with Senate Bill 81 of 2017, sponsored by Senator Jacob Anderegg, which stopped cities and counties requiring licences for occasional businesses run by minors. In 2018 the drinks brand Country Time set up a fund paying up to $300 towards permits or fines for stands. Texas followed with House Bill 234, signed on 14 June 2019 and effective from 1 September that year, captioned as relating to the local regulation of the sale of lemonade or other beverages by children. By the summer of 2019, fourteen states allowed a stand without a permit.

What lemonade means where you are

The word does not describe the same drink everywhere, which makes a single worldwide lemonade day slightly comic. In North America, the Caribbean and South Asia, lemonade normally means a still, cloudy drink of lemon juice, water and sugar. In the United Kingdom, Ireland, France, Germany, Switzerland, South Africa, New Zealand and Australia, the usual meaning is a clear, lemon-flavoured fizzy drink, much closer to what an American would call a soda.

So a British reader marking 20 August with a bottle of lemonade and an American reader with a jug of it are drinking two different things, both correctly named. Neither is wrong, and the date is unofficial in any case. If you want the version with the longest pedigree behind it, squeeze the lemons yourself and do not throw the peel away.

National Lemonade Day Dates

This year National Lemonade Day is celebrated on Thursday, Aug 20, 2026

Year	Date	Day
2026	Aug 20	Thursday
2027	Aug 20	Friday
2028	Aug 20	Sunday
2029	Aug 20	Monday
2030	Aug 20	Tuesday
2031	Aug 20	Wednesday

How to mark 20 August

Seven things worth doing with a bag of lemons, in rough order of effort.