What Week: Week 33
Find the calendar dates covered by any ISO week number.
ISO Week 33 of 2026 runs from August 10 to August 16, 2026, with roughly 19 ISO weeks remaining in the year after it. ISO 8601 weeks always run Monday through Sunday and belong to the year containing that week's Thursday, which is why the first few days of January sometimes belong to the final week of the previous year. Back to School falls within this week in 2026. Next year, 2027, the same week number runs from August 16 to August 22, 2027 instead, since the exact dates shift slightly every year.
As of October 1, 2026, 12:19 PM (America/New York).
Position in the Year
Week 33 falls in the second half of the year, roughly 63% of the way through 2026's 52-53 ISO weeks.
Quarter Overlap
This week sits in calendar Q3, based on its Monday (August 10).