Week 1
- Input
- 04/01/2027 a 10/01/2027
- Expected output
- 2027-W01
Contains the first Thursday of the year, January 7.
Carregando ferramenta… / Loading tool…
2027 calendar with week numbers
Under More options, turn on Week numbers and every row of a month shows its ISO 8601 week. This page explains how the 2027 numbering works, why the start of January still belongs to the previous year's week, and how to read the number when weeks start on Sunday.
Contains the first Thursday of the year, January 7.
The opening Friday still belongs to the previous year.
Ends in 2028.
2026 has 53; 2032 is the next year with 53.
Pick the year, choose the layout and paper, and tap Download PDF or Print. From November the tool already suggests next year. The whole-year layout puts all 12 months on one page; One month per page makes 12 pages with space for notes.
In ISO 8601, week 53 of 2026, because that week's Thursday is December 31. Week 1 of 2027 starts on Monday, January 4.
Not always. ISO is the standard in Brazil and Europe; in the US the week starts on Sunday and week 1 contains January 1. The What Week Is It tool shows both side by side.
Open More options and turn on Week numbers (ISO 8601). A narrow column appears on the left of each month, in the preview, the PDF and the printout alike.
Because weeks cross the new year without being split. Week 52 runs from December 27, 2027 to January 2, 2028, and week 1 of 2028 only starts on Monday, January 3.
No holidays are shown by default. This tool's holiday data covers Brazil only (national and state), and US federal holidays are not included. Turn on Brazilian holidays above, or add your own dates under More options.
One per line, as month/day and a label. Without a year, the date repeats every year. Up to 60 dates.
Holidays are Brazilian: national holidays, fixed-date state holidays (by state) and optional days off. City holidays and movable state holidays are not in the data set.