How this calculation was worked out
The result uses the exact inputs on this page and calendar/time arithmetic appropriate to this calculator. The result shown above is the value to use for this calculation.
ISO week of 2028 Aug 28 – Sep 3, 2028What week of the year is September 1, 2028?
Week 35
Week details
W35ISO weekAug 28week starts (Mon)Sep 3week ends (Sun)52weeks in 20281stweek of the monthQ3quarterFridayweekday693days until week starts
Friday, September 1, 2028 falls in ISO week 35 of 2028. That week runs from Monday Monday, August 28, 2028 to Sunday Sunday, September 3, 2028, and it touches August and September. The ISO year 2028 has 52 weeks in total, so this is week 35 of 52, or about 67% of the way through the ISO year. ISO 8601 weeks begin on Monday, and week 1 is the week that contains the first Thursday of the year. Because of that rule, the first days of January can belong to the last week of the previous year and the last days of December can belong to week 1 of the next. Most years have 52 weeks; roughly every five or six years a 53rd week is added to keep the count aligned with the seasons. Schedules in manufacturing, logistics, education and project management are often written in week numbers, for example a delivery in week 35 or a sprint that ends in week 37. The week starts in 693 days, so there is time to plan. Keep in mind that US calendars often start the week on Sunday and use a different rule for week 1, so week numbers can differ between countries. The week before is week 34, and the week after is week 36. The year pages list every week with its date range, and the week-number pages link to each of them.Which week is it?
How ISO week numbers work
Planning by week
Nearby weeks
ISO week 35 of 2028. On Monday, Monday, August 28, 2028. On Sunday, Sunday, September 3, 2028. 52 ISO weeks. Monday. The week containing the first Thursday of the year. Yes, when January 1 to 3 fall before the first Thursday. The 1st week of the month, counting by seven-day blocks from the 1st.Frequently asked questions
What week number is September 1, 2028?
When does week 35 of 2028 start?
When does week 35 of 2028 end?
How many weeks are in 2028?
Which day starts the ISO week?
What defines week 1?
Can a date in January belong to the previous year's week?
What week of the month is it?
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RESULT & PLANNING
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What Week Is September 1, 2028?: Week 35 ISO week of 2028 — Aug 28 – Sep 3, 2028
Working days and weekends
697Calendar days
499Weekdays
99Saturdays
99Sundays
Not included unless this calculator says otherwisePublic holidays
Practical planning milestones
- Calculated dateFriday, September 1, 2028
Accuracy and limitations
- The result uses the calendar rules and time zone shown on this page.
- Leap years and actual month lengths are handled by the calendar arithmetic where they affect the calculation.
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Calculation history
Machine-readable result
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