Esperanto grammar Part of Chapter 26

CEFR B1

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Test yourself (21 questions)

The Esperanto Calendar: Zamenhofa Tago and Other Festivals

By Michael McGettrickUpdated 12 October 2026

The year has two dates of its own: 15 December, Zamenhof's birthday, and 26 July, when the first textbook was cleared for sale in 1887. Around them sit the ordinary feasts, whose names you build from parts, and the wishes, which all end in -n.

head root (what it is)-n of the object or dateWhat do the colours mean?
WhenNameWhat it marks
15 DecemberZamenhofa Zamenhof's birthday, 1859
26 July the first textbook, 1887
July or August the world congress, a week
25 DecemberChristmas
1 JanuaryNew Year's Day

Quick check

Now use it: three quick questions on the chart above. The full practice is further down.

Spot the mistake

0/3

Tap the word that is wrong.

  • ! - Have a happy festival!

Zamenhofa Tago: 15 December

-n of the object or dateWhat do the colours mean?

Zamenhof was born on 15 December 1859, and his birthday is the one date the whole movement keeps, with club meetings, talks and readings. The custom dates from the 1920s; the writers Baghy and Nikolao Nekrasov were among those who proposed it.

  • 15- . - The club meets on 15 December.

The -n on the date means on, so no preposition is needed. Time expressions has the rule.

One footnote: the Russian Empire still used the calendar, so the records of his birth read 3 December. The 15th is the Gregorian date.

A book as a present

The day is also called -, the Day of the Esperanto Book. People exchange presents, preferably books written in Esperanto, and the reason is practical: the date falls ten days before Christmas. It is a custom, not a rule.

One person holds out a smiling book towards a second person, who reaches out happily to take it; a curved arrow with a heart runs from the giver to the receiver.

Mi donas libron al vi: I give you a book. Mi (I) gives, libron (a book) is the thing given, al vi (to you) receives it.

  • . - I am giving you a book.

Esperanto Day: 26 July, or 2 June

The first textbook, the , passed the Russian censor twice in 1887: once to be printed, once to be distributed.

Date (Gregorian)The censor allowedKept by
2 June 1887printingthe Civito
26 July 1887distributionthe UEA, as

The UEA keeps 26 July (14 July by the calendar). The Civito, a separate Esperanto organisation, keeps 2 June, which it calls the only certain date.

  • 1887. - The book came out in July 1887.

The history of Esperanto tells the story of the book, and la kongreso covers the summer congress.

Naming the feasts

head root (what it is)What do the colours mean?

Most feast names are compounds. The last root says what the thing is; the first says which one. Take them apart and they read themselves.

WordPiecesEnglish
Christ + Christmas: Christ's birth
+ New Year's Day
+ a birthday
+ an anniversary
one rootEaster, and also Passover
  • . - We will travel home for Christmas.

Capitals

Feast names take a capital, like other names; weekdays do not. Months are the disputed case: the writes , and PMEG recommends the capital, but lower-case is very common, and it is what this site writes.

KindExampleCapital?
feast, yes
weekday, no
month or both are met
  • -. - Easter is in April this year.

PMEG adds that no capitalisation rule in Esperanto is binding: these are conventions. Capital letters has the whole picture.

Festo or ferio?

English holiday covers two Esperanto words. A is the celebration; a is a day off work.

WordMeansExample
a celebration, party .
a day free of work .
the holidays, a break ?

The verb and adjective come from the same root:

  • . - We celebrated his birthday.
  • . - She wore a party dress.

Birthdays: naskiĝtago and datreveno

head root (what it is)What do the colours mean?

A is a birthday, the day somebody was born. A is any anniversary: the date coming round again.

WordUse it forExample
a person .
an event, a society

A birthday is one kind of anniversary, but the notes that is the better-understood word for it. To a person, say .

A party under bunting and balloons: the birthday boy, with short hair and a bow tie, cheers behind a pink cake with five candles, flanked by two girls in party hats (one with pigtails and a bow, one with long hair), with a wrapped present on the table.

A naskiĝtago: the knabo (boy) has his birthday, the kuko (cake) has five candles, an amikino (friend, a girl) is at the party, and there is a donaco (present).

  • . - He is five today.

The wishes, and why they end in -n

-n of the object or dateWhat do the colours mean?

Every wish is a sentence with the verb left out, and the full sentence is hardly ever said. PMEG explains it this way: ! is short for !, I wish you a good morning. The wish is the object of , so the adjective and the noun both take -n.

Drop mi deziras al vi: the object keeps its -n
WishWhen
!any festival
!Christmas
!the new year
!a birthday
!a departure

The pattern is open: any adjective and noun, both with -n, make a wish, whether or not anyone has said it before.

  • ! - Have a good weekend!
  • ! - Have a nice holiday!

Thanks and greetings work the same way with a different verb left out. PMEG gives ! as short for !, I give you thanks, and ! as !.

Mistakes English speakers make

WrongRightWhy
! !the adjective takes -n too
! !the noun takes -n too
15-a. 15-.-n makes the date mean on

What to do next

  1. Write three wishes of your own, each an adjective and a noun with -n.
  2. Put 15 December and 26 July in your calendar.
  3. Read la kongreso, the summer event.

See also

Practise: test yourself

Build the word

0/4

Build the feast word from its pieces. The last root says what it is.

  1. Christmas (Christ's birth)

    Accents optional - cx, gx, ux work for ĉ, ĝ, ŭ

    Your word is empty.

  2. New Year's Day

    Accents optional - cx, gx, ux work for ĉ, ĝ, ŭ

    Your word is empty.

  3. a birthday

    Accents optional - cx, gx, ux work for ĉ, ĝ, ŭ

    Your word is empty.

  4. an anniversary

    Accents optional - cx, gx, ux work for ĉ, ĝ, ŭ

    Your word is empty.

Sort into groups

0/6

Capital or lower case? Follow the usual convention.

Tap a word, then the group it belongs in.

Complete the story

0/4

Choose the right form for each gap.

Ana's birthday

Hodiaŭ Ana havas sian . Ŝiaj amikoj venas kaj diras: Feliĉan ! Ŝi ricevas belan . Vespere ŝi diras: Dankon, kaj bonan !

Gap 1 of 4

Spot the mistake

0/3

Tap the word that is wrong.

Pick the right one

0/4

Which word fits?

  1. Kristnasko estas granda . (a celebration)

  2. Morgaŭ estas : la lernejoj estas fermitaj. (a day off)

  3. Hodiaŭ estas mia . (the day I was born)

  4. La societo festas la centan de sia fondiĝo. (the hundredth anniversary)

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Frequently asked questions

What is Zamenhofa ?
The 15th of December, the birthday of L. L. Zamenhof, born in 1859. It is the one date the whole Esperanto movement keeps, with club meetings, talks and readings. The custom dates from the 1920s; the writers Baghy and Nikolao Nekrasov were among those who proposed it. Russian records give 3 December, because the Russian Empire still used the calendar.
Do Esperantists buy a book on 15 December?
Many exchange presents that day, preferably books written in Esperanto, which is why it is also called the Day of the Esperanto Book. The date sits ten days before Christmas, so presents were coming anyway. It is a custom people enjoy, not a rule: nobody has to buy anything.
When is Esperanto Day?
26 July, the day in 1887 when the Russian censor allowed the first textbook, the , to be distributed. The UEA keeps that date. The Civito keeps 2 June instead, the day the censor allowed the book to be printed, because it considers it the only certain date.
Are Esperanto festival names capitalised?
Yes, by convention: , , . Weekdays are not: , . Months are the disputed case: the writes and PMEG recommends the capital, but lower-case is very common, and this site uses it. PMEG says no capitalisation rule in Esperanto is binding.
Why do Esperanto greetings end in -n?
Because each one is a sentence with the verb left out, and the wish is its object. ! is short for , I wish you a good morning. That is why the adjective and the noun both take -n, and why you can build new wishes freely: ! (have a good weekend).