Introduction
Clear time expressions are essential for everyday Portuguese writing. This guide explains how to write dates, times, durations, frequency words, and temporal connectors in Brazilian Portuguese so beginners can produce accurate messages, emails, notes, and simple paragraphs.
- Why time expressions matter in writing
- Basic words and numbers for time
- Writing dates clearly
- Prepositions with time
- Days of the week and parts of the day
- Durations and frequency words
- Temporal connectors and sequence words
- Punctuation, accents, and spelling points
- Practical templates and sentence patterns
- Common mistakes and how to fix them
- How to proofread time expressions
- Resources for continued practice
- Conclusion
Why time expressions matter in writing
Time expressions tell readers when something happens and prevent misunderstandings. In Brazilian Portuguese, small changes in prepositions, accents, or punctuation can change meaning. Learners who write clear times look more competent and avoid missed appointments, confusing schedules, or unclear instructions.
Basic words and numbers for time
Learn these core words before forming sentences.
hoje — today
amanhã — tomorrow
ontem — yesterday
agora — now
depois — later
cedo — early
tarde — late / afternoon
madrugada — dawn / early morning
dias da semana: segunda-feira, terça-feira, quarta-feira, quinta-feira, sexta-feira, sábado, domingo
meses: janeiro, fevereiro, março, abril, maio, junho, julho, agosto, setembro, outubro, novembro, dezembro
Numbers and time format
In writing, Brazilians commonly use the 24-hour clock for schedules and the 12-hour clock in informal contexts. Use colon between hours and minutes.
09:30 — nove e trinta / nove e meia
14:15 — quatorze e quinze / duas e quinze da tarde
7h30, 14h15 — You may also see 7h30 or 14h15 in informal notes, especially timetables.
When writing times in messages, match the formality: use 09:00 or 9h in quick chats; write 09:00 in forms or invitations.
Writing dates clearly
Use day-month-year in Brazilian Portuguese. Use numerals or words depending on formality.
30/06/2026 — common numeric format for forms and tickets
30 de junho de 2026 — standard written form for letters, emails, or official documents
First of the month is written as 1 or 01 in numeric forms; in text, write primeiro: primeiro de maio
Examples of date usage in context
Vou viajar em 15/07/2026. — short message for plans
Reunião confirmada para 12 de agosto de 2026 às 14h. — email to colleagues
Entrega prevista: 01/09/2026. — form or invoice label
Prepositions with time
Prepositions are critical. These are the most common and how to use them:
em + period: em janeiro, em 2026, em 2026 (use em for months, years, seasons)
no / na + day part: no sábado, na manhã de terça-feira
às + time: às 15h, às 8h30 — use às before exact times (plural because implicit horas)
de + start até + end for durations: de 9h até 17h, de segunda a sexta
a / até for deadlines: entregar até sexta-feira, válido até 30/06/2026
Common beginner mistakes with prepositions
Incorrect: Vou no sexta-feira às 10h. Correct: Vou na sexta-feira às 10h.
Incorrect: A reunião é em 15h. Correct: A reunião é às 15h.
Tip: Use na/no with days when you include a part of the day: na segunda-feira de manhã.
Days of the week and parts of the day
When specifying when something happens, combine day and part of day for clarity.
segunda-feira de manhã — Monday morning
quarta à noite — Wednesday night
sábado à tarde — Saturday afternoon
madrugada de domingo — early Sunday morning
Practical message examples
Posso encontrar você na terça-feira de manhã? — polite chat asking for availability
Encontro às 18h no restaurante? — quick confirmation
Podemos remarcar para sexta à tarde? — rescheduling in a message
Durations and frequency words
To say how long or how often, use these constructions.
durations: por 2 horas, durante três dias, por uma semana
frequency: sempre (always), às vezes (sometimes), nunca (never), diariamente (daily), semanalmente (weekly), todo dia / todo dia (every day)
Examples: Fico em São Paulo por duas semanas. Eu vou ao mercado toda semana.
Writing tips for durations
Use por or durante to indicate duration. Por is more common in conversational writing: Vou ficar por três dias.
For recurring events use todo + period: todo mês, todo sábado, todos os dias. Note agreement: todos os dias (plural).
Temporal connectors and sequence words
Useful connectors help structure sentences and short paragraphs.
antes — before
depois — after
então / depois — then / later
enquanto — while
quando — when
Example paragraph for sequencing tasks in Portuguese:
Primeiro, eu acordo às 7h. Depois, tomo café e saio de casa às 8h. Enquanto isso, o ônibus passa às 8h20.
Formal vs informal tone
Choose tone based on context. For formal emails use complete phrases and full date forms: A reunião ocorrerá no dia 12 de julho de 2026, às 14h.
For text messages or chats, be brief: Reunião 12/07 às 14h — ok?
Punctuation, accents, and spelling points
Accents matter in some time words and can change meaning or look unnatural if missing. Examples: amanhã vs amanha is incorrect — use amanhã with tilde. terça-feira requires the accent on terça. manhã and noite do not take accents but madrugada is plain.
Punctuation: use commas to separate time clauses: Chego às 9h, depois almoçamos às 12h30.
Use lowercase for days and months in normal Portuguese writing: segunda-feira, abril. Capitalize only at sentence start or for proper nouns.
Common accent mistakes
Incorrect: amanha. Correct: amanhã.
Incorrect: Terca-feira. Correct: terça-feira.
Tip: Practice typing with correct accents on your keyboard; many errors come from omission.
Practical templates and sentence patterns
Use these patterns to write messages, emails, and notes quickly.
Scheduling a meeting: Podemos marcar para [dia/ data] às [hora]? — Podemos marcar para sexta-feira às 10h?
Confirming: Confirmo presença no dia [data] às [hora]. — Confirmo presença no dia 05/08/2026 às 15h.
Asking for deadline: Qual o prazo para entregar o trabalho? — Qual o prazo para entregar o trabalho? Precisa ser até quando?
Explaining duration: Ficarei em [lugar] por [duração]. — Ficarei no Rio por duas semanas.
Giving schedule in a short paragraph: Segunda a sexta: 9h–17h. Almoço: 12h–13h. Atendimento aos sábados: 9h–12h.
Examples for travel and daily life
Bilhete de ônibus: Partida 07:45 — Chegada 10:30.
Reserva de restaurante: Mesa para 2 pessoas às 20h do dia 20/07/2026.
Note to roommate: Saio às 8h e volto às 18h. Não me espere para o jantar.
Common mistakes and how to fix them
Omitting às before exact times: Fix by adding às. Reunião 15h is understandable but Reunião às 15h is correct.
Mixing numeric date order: If you write 04/05/2026, clarify because some readers may misread. Prefer 4 de maio de 2026 or write month name for clarity.
Using capital letters for days/months: Use lowercase: segunda-feira, janeiro.
Wrong preposition with days: Use na/ no for periods: na segunda-feira de manhã, no sábado à noite.
Beginner practice exercises
Write a short message to confirm an appointment using dia, hora, and preposition às: Example: Olá, confirmo a consulta no dia 10 de setembro de 2026 às 11h?
Create a one-line schedule for your week: Example: Segunda-feira: trabalho 9h–18h; Terça-feira: aula 19h–21h.
Write an email phrase giving a deadline: Example: Favor enviar o relatório até sexta-feira, 30/06/2026.
How to proofread time expressions
Check three things when you finish writing: date order (day-month-year), presence of correct prepositions (em/no/na/às), and accents on words like amanhã and terça-feira. Also ensure consistency in formats: do not mix 24-hour and 12-hour styles in the same message.
Read aloud to see if phrases sound natural. If a reader could misinterpret the date, spell out the month in words for clarity.
Resources for continued practice
Use simple Brazilian Portuguese schedules, menus, and transit timetables to copy correct formats. Practice writing short emails and texts with dates and times, then compare with native examples or ask a tutor to correct mistakes.
Conclusion
Mastering Portuguese time expressions takes attention to prepositions, date order, accents, and consistent time formats. Use the practical patterns and templates here to write clear messages, emails, and notes. Regularly proofread for às, na/no, and proper accents like amanhã and terça-feira to avoid common beginner errors.
