Week Numbers

Week Numbers for the Year 2033

Knowing the week numbers for 2033 can be helpful for planning events, managing projects, or simply staying organized. Here’s a complete breakdown of all the weeks in 2033, including their start and end dates.

What Are Week Numbers?

Week numbers are a standardized way of counting the weeks in a year. Each week is assigned a number from 1 to 52 (sometimes 53), depending on how the calendar aligns with the start of the year. According to the ISO 8601 standard, each week starts on a Monday, and Week 1 is the week that contains the first Thursday of the year.

Week Number Table for 2033

Week NumberStart DateEnd Date
Week 1Jan 3, 2033Jan 9, 2033
Week 2Jan 10, 2033Jan 16, 2033
Week 3Jan 17, 2033Jan 23, 2033
Week 4Jan 24, 2033Jan 30, 2033
Week 5Jan 31, 2033Feb 6, 2033
Week 6Feb 7, 2033Feb 13, 2033
Week 7Feb 14, 2033Feb 20, 2033
Week 8Feb 21, 2033Feb 27, 2033
Week 9Feb 28, 2033Mar 6, 2033
Week 10Mar 7, 2033Mar 13, 2033
Week 11Mar 14, 2033Mar 20, 2033
Week 12Mar 21, 2033Mar 27, 2033
Week 13Mar 28, 2033Apr 3, 2033
Week 14Apr 4, 2033Apr 10, 2033
Week 15Apr 11, 2033Apr 17, 2033
Week 16Apr 18, 2033Apr 24, 2033
Week 17Apr 25, 2033May 1, 2033
Week 18May 2, 2033May 8, 2033
Week 19May 9, 2033May 15, 2033
Week 20May 16, 2033May 22, 2033
Week 21May 23, 2033May 29, 2033
Week 22May 30, 2033Jun 5, 2033
Week 23Jun 6, 2033Jun 12, 2033
Week 24Jun 13, 2033Jun 19, 2033
Week 25Jun 20, 2033Jun 26, 2033
Week 26Jun 27, 2033Jul 3, 2033
Week 27Jul 4, 2033Jul 10, 2033
Week 28Jul 11, 2033Jul 17, 2033
Week 29Jul 18, 2033Jul 24, 2033
Week 30Jul 25, 2033Jul 31, 2033
Week 31Aug 1, 2033Aug 7, 2033
Week 32Aug 8, 2033Aug 14, 2033
Week 33Aug 15, 2033Aug 21, 2033
Week 34Aug 22, 2033Aug 28, 2033
Week 35Aug 29, 2033Sep 4, 2033
Week 36Sep 5, 2033Sep 11, 2033
Week 37Sep 12, 2033Sep 18, 2033
Week 38Sep 19, 2033Sep 25, 2033
Week 39Sep 26, 2033Oct 2, 2033
Week 40Oct 3, 2033Oct 9, 2033
Week 41Oct 10, 2033Oct 16, 2033
Week 42Oct 17, 2033Oct 23, 2033
Week 43Oct 24, 2033Oct 30, 2033
Week 44Oct 31, 2033Nov 6, 2033
Week 45Nov 7, 2033Nov 13, 2033
Week 46Nov 14, 2033Nov 20, 2033
Week 47Nov 21, 2033Nov 27, 2033
Week 48Nov 28, 2033Dec 4, 2033
Week 49Dec 5, 2033Dec 11, 2033
Week 50Dec 12, 2033Dec 18, 2033
Week 51Dec 19, 2033Dec 25, 2033
Week 52Dec 26, 2033Jan 1, 2034
Week 53Jan 2, 2034Jan 8, 2034

Yes, 2033 has 53 weeks! This happens when the year starts on a Thursday or is a leap year that ends on a Thursday—allowing for that extra ISO week.

Why Are Week Numbers Useful?

Week numbers are used in a variety of scenarios across professional and personal settings:

Fun Fact

The ISO 8601 week-numbering system was first introduced in 1988 and is used by many countries around the world, especially in Europe. The U.S. doesn't commonly use it, but many global systems rely on it for consistency.

Find the Week Number of Any Date

Want to know the week number of a specific date? In PHP, you can use the DateTime object like this:

Week number is: 14

List the week numbers of the coming years.