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2035 week numbers · ISO 8601

Week Numbers for 2035 — ISO Week List

Complete list of ISO week numbers for 2035 — 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 2035

2035 has 52 ISO weeks. Week 1 starts on Jan 01, 2035 and week 52 ends on Dec 30, 2035. 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 2035 Jan 01, 2035 Jan 07, 2035 2051222400 2051740800
2 2035 Jan 08, 2035 Jan 14, 2035 2051827200 2052345600
3 2035 Jan 15, 2035 Jan 21, 2035 2052432000 2052950400
4 2035 Jan 22, 2035 Jan 28, 2035 2053036800 2053555200
5 2035 Jan 29, 2035 Feb 04, 2035 2053641600 2054160000
6 2035 Feb 05, 2035 Feb 11, 2035 2054246400 2054764800
7 2035 Feb 12, 2035 Feb 18, 2035 2054851200 2055369600
8 2035 Feb 19, 2035 Feb 25, 2035 2055456000 2055974400
9 2035 Feb 26, 2035 Mar 04, 2035 2056060800 2056579200
10 2035 Mar 05, 2035 Mar 11, 2035 2056665600 2057184000
11 2035 Mar 12, 2035 Mar 18, 2035 2057270400 2057788800
12 2035 Mar 19, 2035 Mar 25, 2035 2057875200 2058393600
13 2035 Mar 26, 2035 Apr 01, 2035 2058480000 2058998400
14 2035 Apr 02, 2035 Apr 08, 2035 2059084800 2059603200
15 2035 Apr 09, 2035 Apr 15, 2035 2059689600 2060208000
16 2035 Apr 16, 2035 Apr 22, 2035 2060294400 2060812800
17 2035 Apr 23, 2035 Apr 29, 2035 2060899200 2061417600
18 2035 Apr 30, 2035 May 06, 2035 2061504000 2062022400
19 2035 May 07, 2035 May 13, 2035 2062108800 2062627200
20 2035 May 14, 2035 May 20, 2035 2062713600 2063232000
21 2035 May 21, 2035 May 27, 2035 2063318400 2063836800
22 2035 May 28, 2035 Jun 03, 2035 2063923200 2064441600
23 2035 Jun 04, 2035 Jun 10, 2035 2064528000 2065046400
24 2035 Jun 11, 2035 Jun 17, 2035 2065132800 2065651200
25 2035 Jun 18, 2035 Jun 24, 2035 2065737600 2066256000
26 2035 Jun 25, 2035 Jul 01, 2035 2066342400 2066860800
27 2035 Jul 02, 2035 Jul 08, 2035 2066947200 2067465600
28 2035 Jul 09, 2035 Jul 15, 2035 2067552000 2068070400
29 2035 Jul 16, 2035 Jul 22, 2035 2068156800 2068675200
30 2035 Jul 23, 2035 Jul 29, 2035 2068761600 2069280000
31 2035 Jul 30, 2035 Aug 05, 2035 2069366400 2069884800
32 2035 Aug 06, 2035 Aug 12, 2035 2069971200 2070489600
33 2035 Aug 13, 2035 Aug 19, 2035 2070576000 2071094400
34 2035 Aug 20, 2035 Aug 26, 2035 2071180800 2071699200
35 2035 Aug 27, 2035 Sep 02, 2035 2071785600 2072304000
36 2035 Sep 03, 2035 Sep 09, 2035 2072390400 2072908800
37 2035 Sep 10, 2035 Sep 16, 2035 2072995200 2073513600
38 2035 Sep 17, 2035 Sep 23, 2035 2073600000 2074118400
39 2035 Sep 24, 2035 Sep 30, 2035 2074204800 2074723200
40 2035 Oct 01, 2035 Oct 07, 2035 2074809600 2075328000
41 2035 Oct 08, 2035 Oct 14, 2035 2075414400 2075932800
42 2035 Oct 15, 2035 Oct 21, 2035 2076019200 2076537600
43 2035 Oct 22, 2035 Oct 28, 2035 2076624000 2077142400
44 2035 Oct 29, 2035 Nov 04, 2035 2077228800 2077747200
45 2035 Nov 05, 2035 Nov 11, 2035 2077833600 2078352000
46 2035 Nov 12, 2035 Nov 18, 2035 2078438400 2078956800
47 2035 Nov 19, 2035 Nov 25, 2035 2079043200 2079561600
48 2035 Nov 26, 2035 Dec 02, 2035 2079648000 2080166400
49 2035 Dec 03, 2035 Dec 09, 2035 2080252800 2080771200
50 2035 Dec 10, 2035 Dec 16, 2035 2080857600 2081376000
51 2035 Dec 17, 2035 Dec 23, 2035 2081462400 2081980800
52 2035 Dec 24, 2035 Dec 30, 2035 2082067200 2082585600

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 2035, that end value is 2051740800; 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 2035'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 2035, that mapping is concrete: week 1 opens at epoch 2051222400, and week 52 closes at 2083190399, the final second of Sunday, Dec 30, 2035.

  • Epoch 2051222400 → 00:00 UTC on Monday of week 1 (Jan 01, 2035).
  • Epoch 2083190399 → 23:59:59 UTC on Sunday of week 52 — one second before 2083190400 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 2035 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. 2035 starts on a Monday, which keeps it a 52-week year; the days after week 52 belong to week 1 of 2036. December 31, $2035 closes on a $Monday, and the last week ends $on Dec 30, 2035, still inside 2035

How 2035'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, 2035 sits in ISO week 9; in 2034 and 2036 it will sit one week off in either direction. The tables for the adjacent years make the drift visible:

Examples: 2035's weeks at the epoch boundaries

  • January 1, 2035 (Monday) falls in ISO week 1 of ISO year 2035.
  • December 31, 2035 (Monday) falls in ISO week 1 of ISO year 2036.
  • March 1, 2035 sits in ISO week 9 — the sort of date whose week number shifts year to year.

Week Numbers for 2035 — ISO Week List — questions from actual use

What are the week numbers for 2035?

2035 has 52 ISO weeks. Week 1 runs Jan 01, 2035 to Jan 07, 2035, and week 52 runs Dec 24, 2035 to Dec 30, 2035.

Is 2035 a 52-week or 53-week year?

2035 is a 52-week year (January 1 was a Monday). The next 53-week year is 2037, because its January 1 falls on the right weekday to spill into a 53rd week.

When do 2035's week numbers and dates disagree?

Day-of-year and week-of-year counting disagree at the edges. January 1, 2035 (Monday) sits in ISO week 1 of 2035, and December 31 (Monday) lands in week 1 of 2036 — already week 1 of 2036. 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 2035?

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 2035, those run from 2051222400 for the start of week 1 to 2083190399 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 2035 week calendar

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

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