Week Numbers

Week Numbers for the Year 2049

Knowing the week numbers for 2049 can be helpful for planning events, managing projects, or simply staying organized. Here’s a complete breakdown of all the weeks in 2049, 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 2049

Week NumberStart DateEnd Date
Week 1Jan 4, 2049Jan 10, 2049
Week 2Jan 11, 2049Jan 17, 2049
Week 3Jan 18, 2049Jan 24, 2049
Week 4Jan 25, 2049Jan 31, 2049
Week 5Feb 1, 2049Feb 7, 2049
Week 6Feb 8, 2049Feb 14, 2049
Week 7Feb 15, 2049Feb 21, 2049
Week 8Feb 22, 2049Feb 28, 2049
Week 9Mar 1, 2049Mar 7, 2049
Week 10Mar 8, 2049Mar 14, 2049
Week 11Mar 15, 2049Mar 21, 2049
Week 12Mar 22, 2049Mar 28, 2049
Week 13Mar 29, 2049Apr 4, 2049
Week 14Apr 5, 2049Apr 11, 2049
Week 15Apr 12, 2049Apr 18, 2049
Week 16Apr 19, 2049Apr 25, 2049
Week 17Apr 26, 2049May 2, 2049
Week 18May 3, 2049May 9, 2049
Week 19May 10, 2049May 16, 2049
Week 20May 17, 2049May 23, 2049
Week 21May 24, 2049May 30, 2049
Week 22May 31, 2049Jun 6, 2049
Week 23Jun 7, 2049Jun 13, 2049
Week 24Jun 14, 2049Jun 20, 2049
Week 25Jun 21, 2049Jun 27, 2049
Week 26Jun 28, 2049Jul 4, 2049
Week 27Jul 5, 2049Jul 11, 2049
Week 28Jul 12, 2049Jul 18, 2049
Week 29Jul 19, 2049Jul 25, 2049
Week 30Jul 26, 2049Aug 1, 2049
Week 31Aug 2, 2049Aug 8, 2049
Week 32Aug 9, 2049Aug 15, 2049
Week 33Aug 16, 2049Aug 22, 2049
Week 34Aug 23, 2049Aug 29, 2049
Week 35Aug 30, 2049Sep 5, 2049
Week 36Sep 6, 2049Sep 12, 2049
Week 37Sep 13, 2049Sep 19, 2049
Week 38Sep 20, 2049Sep 26, 2049
Week 39Sep 27, 2049Oct 3, 2049
Week 40Oct 4, 2049Oct 10, 2049
Week 41Oct 11, 2049Oct 17, 2049
Week 42Oct 18, 2049Oct 24, 2049
Week 43Oct 25, 2049Oct 31, 2049
Week 44Nov 1, 2049Nov 7, 2049
Week 45Nov 8, 2049Nov 14, 2049
Week 46Nov 15, 2049Nov 21, 2049
Week 47Nov 22, 2049Nov 28, 2049
Week 48Nov 29, 2049Dec 5, 2049
Week 49Dec 6, 2049Dec 12, 2049
Week 50Dec 13, 2049Dec 19, 2049
Week 51Dec 20, 2049Dec 26, 2049
Week 52Dec 27, 2049Jan 2, 2050
Week 53Jan 3, 2050Jan 9, 2050

Yes, 2049 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.