Time and Dates in Irish

In Brief

To give the hour, Irish uses Tá sé a + number + a chlog: Tá sé a trí a chlog means “It is three o’clock.” Days normally appear as forms such as Dé Luain and Dé Máirt, while the essential day words are inniu (today), amárach (tomorrow), and inné (yesterday).

Overview

Time and date expressions let you arrange a meeting, understand opening hours, and say when something happens. At A1, the main task is to learn a few reliable patterns rather than translate English word for word. Irish has its own fixed phrases: the equivalent of “o’clock” is a chlog, and the names used for days often begin with Dé.

You will also notice initial mutation, a change at the beginning of a word caused by its grammatical surroundings. For example, clog appears as chlog in the clock-time pattern. Treat the complete expression as a unit at first; the mutation will become easier to analyse as your Irish develops.

Numbers are the foundation for this topic. If forms such as a haon, a dó, and a trí are not yet familiar, review them before practising a full set of times. The forms used in telling the time belong to the counting system, but they do not always look exactly like a bare number printed on a list.

How It Works

Asking and giving the time

The usual question is:

• Cén t-am é? — What time is it?

For a whole hour, use this frame:

Tá sé a + number + a chlog.

Here tá is a form of “be,” sé means “it,” and a chlog completes the clock expression. Learn the sequence as one phrase rather than trying to match every word with English.

Hour	Irish	English
1:00	Tá sé a haon a chlog.	It is one o’clock.
2:00	Tá sé a dó a chlog.	It is two o’clock.
3:00	Tá sé a trí a chlog.	It is three o’clock.
4:00	Tá sé a ceathair a chlog.	It is four o’clock.
5:00	Tá sé a cúig a chlog.	It is five o’clock.
6:00	Tá sé a sé a chlog.	It is six o’clock.
7:00	Tá sé a seacht a chlog.	It is seven o’clock.
8:00	Tá sé a hocht a chlog.	It is eight o’clock.
9:00	Tá sé a naoi a chlog.	It is nine o’clock.
10:00	Tá sé a deich a chlog.	It is ten o’clock.
11:00	Tá sé a haon déag a chlog.	It is eleven o’clock.
12:00	Tá sé a dó dhéag a chlog.	It is twelve o’clock.

The added h in a haon and a hocht, and the change from déag to dhéag after dó, are part of the standard forms. They are not optional spelling decorations.

To say that an event happens at a whole hour, use ar a + number + a chlog:

• ar a seacht a chlog — at seven o’clock
• ar a deich a chlog — at ten o’clock

This is an important contrast: Tá sé a seacht a chlog tells the current time, while Tosaíonn sé ar a seacht a chlog says when something starts.

Minutes past and minutes to

Two useful linking expressions are:

• tar éis — after, past
• chun — towards, to

For a beginner, the most useful conventional fractions are:

Time	Irish expression	Literal shape
3:15	ceathrú tar éis a trí	a quarter after three
3:30	leathuair tar éis a trí	half an hour after three
3:45	ceathrú chun a ceathair	a quarter to four

You can place Tá sé before these expressions: Tá sé ceathrú tar éis a trí. Notice that Irish “half three” is not the pattern: 3:30 is described as half an hour after three.

Digital times are also commonly read with numbers, especially in timetables and modern everyday contexts. Usage varies, so the safest A1 strategy is to master whole hours, quarter past, half past, and quarter to first.

Days of the week

The standard day forms are:

Irish	English
Dé Luain	Monday
Dé Máirt	Tuesday
Dé Céadaoin	Wednesday
Déardaoin	Thursday
Dé hAoine	Friday
Dé Sathairn	Saturday
Dé Domhnaigh	Sunday

Déardaoin is written as one word. In Dé hAoine, the h is written separately with the following word. Capitalisation also differs from English habits: these conventional day names are normally capitalised as shown.

A day form can answer “When?” without adding an English-style equivalent of “on”:

• Dé Luain — on Monday
• Feicfidh mé thú Dé hAoine. — I will see you on Friday.

To identify today, a natural frame is Is é inniu...:

• Is é inniu an Luan. — Today is Monday.

Here an Luan names Monday as the day itself, whereas Dé Luain is especially useful in a time phrase such as “on Monday.” Learners will meet both patterns.

Months

Irish	English
Eanáir	January
Feabhra	February
Márta	March
Aibreán	April
Bealtaine	May
Meitheamh	June
Iúil	July
Lúnasa	August
Meán Fómhair	September
Deireadh Fómhair	October
Samhain	November
Nollaig	December

The noun mí means “month,” so mí Eanáir is literally “the month of January.” The two-word names Meán Fómhair and Deireadh Fómhair keep their spaces and both words are capitalised.

For simple dates, Irish commonly puts the numbered day before a phrase with de (“of”):

• an chéad lá de mhí Eanáir — the first day of January
• an dara lá de mhí Feabhra — the second day of February

After de mhí, the month may show lenition (an added h after an initial consonant), as in de mhí Feabhra. More date forms depend on ordinal numbers—forms such as “first,” “second,” and “third”—so beginners do not need to generate every calendar date immediately.

Essential time words

Irish	English	Example
inniu	today	inniu ar a trí — today at three
amárach	tomorrow	maidin amárach — tomorrow morning
inné	yesterday	tráthnóna inné — yesterday afternoon/evening
anois	now	anois díreach — right now
ar maidin	in the morning	ar maidin Dé Luain — on Monday morning
tráthnóna	afternoon/evening	tráthnóna amárach — tomorrow afternoon/evening
anocht	tonight	ar a hocht anocht — at eight tonight

English often uses a preposition in “on Monday,” “today,” or “tomorrow.” Irish does not insert one mechanically. Learn Dé Luain, inniu, and amárach as complete time expressions.

Examples in Context

Irish	English	Note
Cén t-am é?	What time is it?	The basic time question.
Tá sé a trí a chlog.	It is three o’clock.	Whole-hour pattern.
Tá sé a haon a chlog.	It is one o’clock.	aon appears as a haon.
Tá sé ceathrú tar éis a cúig.	It is quarter past five.	Literally “a quarter after five.”
Tá sé leathuair tar éis a naoi.	It is half past nine.	Literally “half an hour after nine.”
Tá sé ceathrú chun a seacht.	It is quarter to seven.	The coming hour follows chun.
Tosaíonn an rang ar a deich a chlog.	The class starts at ten o’clock.	ar a introduces the scheduled time.
Feicfidh mé thú Dé hAoine.	I will see you on Friday.	No extra word meaning “on” is needed.
Is é inniu an Luan.	Today is Monday.	Identifies the current day.
Beidh mé ann amárach.	I will be there tomorrow.	amárach stands alone as a time expression.
Bhí sé anseo inné.	He was here yesterday.	inné locates a past event.
Tiocfaidh sí ar a hocht anocht.	She will come at eight tonight.	Clock time plus anocht.
Táimid ag dul ann ar maidin.	We are going there in the morning.	Fixed phrase ar maidin.
Is í Eanáir an chéad mhí den bhliain.	January is the first month of the year.	A calendar statement.
Tá mo bhreithlá i mí Lúnasa.	My birthday is in August.	i mí means “in the month of.”

Common Mistakes

Copying English “at” into the current-time pattern

• Wrong: Tá sé ar a trí a chlog.
• Right: Tá sé a trí a chlog.
• Why: Use Tá sé a... to state what time it is. Use ar a... when an event occurs at that time: Tosaíonn sé ar a trí a chlog.

Omitting the mutation in a chlog

• Wrong: Tá sé a cúig a clog.
• Right: Tá sé a cúig a chlog.
• Why: The fixed clock expression uses chlog, with lenition of clog.

Using bare number spellings in every hour

• Wrong: Tá sé a aon a chlog.
• Right: Tá sé a haon a chlog.
• Why: The counting particle before the number produces forms such as a haon and a hocht. Learn each hour aloud as a chunk.

Adding a separate word for “on” before every day

• Wrong: translating “on Monday” word by word before Dé Luain
• Right: Dé Luain
• Why: The day expression itself can mean “on Monday” when it tells when something happens.

Confusing “past” and “to”

• Wrong: ceathrú chun a trí for 3:15
• Right: ceathrú tar éis a trí
• Why: tar éis looks back to the hour already passed; chun points toward the next hour. At 3:45, say ceathrú chun a ceathair.

Treating all date words like English proper nouns

• Wrong: assuming an English date can simply be replaced word for word
• Right: learn frames such as mí Eanáir and an chéad lá de mhí Eanáir
• Why: Irish date phrases can use mí and ordinal forms, and surrounding words may trigger an initial mutation.

Usage Notes

Irish is spoken in several major dialect areas, and pronunciation—and sometimes the preferred way of expressing exact times—can vary. The patterns in this article are broadly useful standard forms. When listening to native speakers, copy the pronunciation and phrasing used in their region rather than treating every difference as an error.

The 24-hour clock is common in written schedules, transport information, and digital displays. In conversation, context and words such as ar maidin or anocht often make the part of the day clear. You therefore do not need to force “a.m.” or “p.m.” into every spoken sentence.

Tráthnóna can cover a stretch that English divides between “afternoon” and “evening.” Translation depends on the hour and context. This is a useful reminder that time vocabulary rarely divides the day in exactly the same way across languages.

Beyond the Basics / Advanced Use

You do not need to master the following details at A1, but they explain forms you will meet later.

Full dates rely on ordinal numbers, the number forms that indicate position in a sequence: “first,” “second,” “third,” and so on. These are not always predictable from cardinal numbers, so learn them as a separate set before trying to say every date. In more complete date phrases, de and other small grammatical words can alter the beginning or ending of the month expression.

Irish also distinguishes different calendar and recurring-day constructions. For example, the form used to say that something happens on one particular Monday need not be identical to the noun form used for Monday as a named day or in a repeated schedule. At beginner level, Dé Luain and the other Dé forms are the safest core set; later study will add recurring expressions such as “every Monday.”

In spontaneous speech, speakers may choose traditional fraction-based clock expressions, direct numerical readings, or phrasing influenced by local usage. Comprehension matters before production: first recognise tar éis as “past” and chun as “to,” then broaden your listening experience.

Practice Tips

1. Build a twelve-hour speaking loop. Point to each hour on an analogue clock and say the complete phrase, from Tá sé a haon a chlog to Tá sé a dó dhéag a chlog. This practises the mutations along with the numbers.
2. Use a real weekly calendar. Write one genuine activity beside each day, then say it aloud: Dé Máirt ar a seacht a chlog, for example. Combining a day with a time is more memorable than learning two isolated lists.
3. Give a daily three-line update. Say what happened inné, what is happening inniu, and what will happen amárach. Even with simple verbs, this makes the three easily confused time words automatic.

Related Concepts

• Prerequisite: Numbers — provides the number forms needed for hours and calendar dates.