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2029 week numbers · ISO 8601

Week Numbers for 2029 — ISO Week List

Complete list of ISO week numbers for 2029 — 52 weeks, each with its Monday start date, Sunday end date, and the Unix epoch timestamps for the start and end of the week. Weeks run Monday to Sunday per ISO 8601. This is a 52-week year.

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Week numbers for 2029

2029 has 52 ISO weeks. Week 1 starts on Jan 01, 2029 and week 52 ends on Dec 30, 2029. Each week below shows its ISO week number, the Monday start date, the Sunday end date, and the Unix epoch timestamp for the start of the week (00:00 UTC on Monday). Weeks are numbered per ISO 8601, where week 1 is the week containing the first Thursday of the year and every week runs Monday to Sunday.

Week # ISO year Monday start Sunday end Start epoch (UTC) End epoch (UTC)
1 2029 Jan 01, 2029 Jan 07, 2029 1861920000 1862438400
2 2029 Jan 08, 2029 Jan 14, 2029 1862524800 1863043200
3 2029 Jan 15, 2029 Jan 21, 2029 1863129600 1863648000
4 2029 Jan 22, 2029 Jan 28, 2029 1863734400 1864252800
5 2029 Jan 29, 2029 Feb 04, 2029 1864339200 1864857600
6 2029 Feb 05, 2029 Feb 11, 2029 1864944000 1865462400
7 2029 Feb 12, 2029 Feb 18, 2029 1865548800 1866067200
8 2029 Feb 19, 2029 Feb 25, 2029 1866153600 1866672000
9 2029 Feb 26, 2029 Mar 04, 2029 1866758400 1867276800
10 2029 Mar 05, 2029 Mar 11, 2029 1867363200 1867881600
11 2029 Mar 12, 2029 Mar 18, 2029 1867968000 1868486400
12 2029 Mar 19, 2029 Mar 25, 2029 1868572800 1869091200
13 2029 Mar 26, 2029 Apr 01, 2029 1869177600 1869696000
14 2029 Apr 02, 2029 Apr 08, 2029 1869782400 1870300800
15 2029 Apr 09, 2029 Apr 15, 2029 1870387200 1870905600
16 2029 Apr 16, 2029 Apr 22, 2029 1870992000 1871510400
17 2029 Apr 23, 2029 Apr 29, 2029 1871596800 1872115200
18 2029 Apr 30, 2029 May 06, 2029 1872201600 1872720000
19 2029 May 07, 2029 May 13, 2029 1872806400 1873324800
20 2029 May 14, 2029 May 20, 2029 1873411200 1873929600
21 2029 May 21, 2029 May 27, 2029 1874016000 1874534400
22 2029 May 28, 2029 Jun 03, 2029 1874620800 1875139200
23 2029 Jun 04, 2029 Jun 10, 2029 1875225600 1875744000
24 2029 Jun 11, 2029 Jun 17, 2029 1875830400 1876348800
25 2029 Jun 18, 2029 Jun 24, 2029 1876435200 1876953600
26 2029 Jun 25, 2029 Jul 01, 2029 1877040000 1877558400
27 2029 Jul 02, 2029 Jul 08, 2029 1877644800 1878163200
28 2029 Jul 09, 2029 Jul 15, 2029 1878249600 1878768000
29 2029 Jul 16, 2029 Jul 22, 2029 1878854400 1879372800
30 2029 Jul 23, 2029 Jul 29, 2029 1879459200 1879977600
31 2029 Jul 30, 2029 Aug 05, 2029 1880064000 1880582400
32 2029 Aug 06, 2029 Aug 12, 2029 1880668800 1881187200
33 2029 Aug 13, 2029 Aug 19, 2029 1881273600 1881792000
34 2029 Aug 20, 2029 Aug 26, 2029 1881878400 1882396800
35 2029 Aug 27, 2029 Sep 02, 2029 1882483200 1883001600
36 2029 Sep 03, 2029 Sep 09, 2029 1883088000 1883606400
37 2029 Sep 10, 2029 Sep 16, 2029 1883692800 1884211200
38 2029 Sep 17, 2029 Sep 23, 2029 1884297600 1884816000
39 2029 Sep 24, 2029 Sep 30, 2029 1884902400 1885420800
40 2029 Oct 01, 2029 Oct 07, 2029 1885507200 1886025600
41 2029 Oct 08, 2029 Oct 14, 2029 1886112000 1886630400
42 2029 Oct 15, 2029 Oct 21, 2029 1886716800 1887235200
43 2029 Oct 22, 2029 Oct 28, 2029 1887321600 1887840000
44 2029 Oct 29, 2029 Nov 04, 2029 1887926400 1888444800
45 2029 Nov 05, 2029 Nov 11, 2029 1888531200 1889049600
46 2029 Nov 12, 2029 Nov 18, 2029 1889136000 1889654400
47 2029 Nov 19, 2029 Nov 25, 2029 1889740800 1890259200
48 2029 Nov 26, 2029 Dec 02, 2029 1890345600 1890864000
49 2029 Dec 03, 2029 Dec 09, 2029 1890950400 1891468800
50 2029 Dec 10, 2029 Dec 16, 2029 1891555200 1892073600
51 2029 Dec 17, 2029 Dec 23, 2029 1892160000 1892678400
52 2029 Dec 24, 2029 Dec 30, 2029 1892764800 1893283200

Epoch columns are UTC: "Start" is 00:00:00 on the Monday, "End" is 00:00:00 on the Sunday — the first second of the last day, not the last second of the week. For week 1 of 2029, that end value is 1862438400; add 604,799 to any start epoch to land on the week's final second (Sunday 23:59:59).

How to read this table

  • Week # — the ISO 8601 week number for that week.
  • ISO year — the ISO week-numbering year this week belongs to (can differ from the calendar year for a few edge days).
  • Monday start — the date of the Monday that starts the week, in UTC.
  • Sunday end — the date of the Sunday that ends the week, in UTC.
  • Start epoch (UTC) — Unix timestamp for 00:00 UTC on Monday.
  • End epoch (UTC) — Unix timestamp for 00:00 UTC on Sunday.

Reading 2029's weeks as epoch ranges

A Unix timestamp pins an instant; an ISO week names a seven-day span. Reporting tools constantly translate between the two — a log line becomes "week 9", or a weekly report becomes an epoch range to query. In 2029, that mapping is concrete: week 1 opens at epoch 1861920000, and week 52 closes at 1893887999, the final second of Sunday, Dec 30, 2029.

  • Epoch 1861920000 → 00:00 UTC on Monday of week 1 (Jan 01, 2029).
  • Epoch 1893887999 → 23:59:59 UTC on Sunday of week 52 — one second before 1893888000 would tick over to the next ISO year's week 1.
  • Any week's span → its start epoch up to start + 604,799 seconds; exactly 604,800 seconds per week, no exceptions (UTC has no DST).

Why 2029 has 52 weeks

The count falls out of one rule: ISO week 1 is the week containing the first Thursday, and weeks run Monday–Sunday. 2029 starts on a Monday, which keeps it a 52-week year; the days after week 52 belong to week 1 of 2030. December 31, $2029 closes on a $Monday, and the last week ends $on Dec 30, 2029, still inside 2029

How 2029's weeks line up against neighboring years

The same calendar date rarely keeps its week number from one year to the next, because each January 1 lands on a different weekday. March 1, 2029 sits in ISO week 9; in 2028 and 2030 it will sit one week off in either direction. The tables for the adjacent years make the drift visible:

Examples: 2029's weeks at the epoch boundaries

  • January 1, 2029 (Monday) falls in ISO week 1 of ISO year 2029.
  • December 31, 2029 (Monday) falls in ISO week 1 of ISO year 2030.
  • March 1, 2029 sits in ISO week 9 — the sort of date whose week number shifts year to year.

Week Numbers for 2029 — ISO Week List — questions from actual use

What are the week numbers for 2029?

2029 has 52 ISO weeks. Week 1 runs Jan 01, 2029 to Jan 07, 2029, and week 52 runs Dec 24, 2029 to Dec 30, 2029.

Is 2029 a 52-week or 53-week year?

2029 is a 52-week year (January 1 was a Monday). The next 53-week year is 2032, because its January 1 falls on the right weekday to spill into a 53rd week.

When do 2029's week numbers and dates disagree?

Day-of-year and week-of-year counting disagree at the edges. January 1, 2029 (Monday) sits in ISO week 1 of 2029, and December 31 (Monday) lands in week 1 of 2030 — already week 1 of 2030. The ISO year owns the days its weeks' Thursdays fall in, so a few days each December and January always belong to the neighboring year.

What epoch timestamps belong to a week in 2029?

Each week on this page shows two Unix timestamps: 00:00 UTC on its Monday (the start) and 00:00 UTC on its Sunday. For 2029, those run from 1861920000 for the start of week 1 to 1893887999 for the last second of week 52 — a span of exactly 31,449,600 seconds across 52 weeks.

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Sources & references

Around the 2029 week calendar

Neighbor years, the same days as day numbers, and the background behind the epoch values:

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