{"id":189733,"date":"2026-05-30T15:13:21","date_gmt":"2026-05-30T15:13:21","guid":{"rendered":"https:\/\/www.colomio.com\/?page_id=189733"},"modified":"2026-05-30 15:13:36","modified_gmt":"2026-05-30T15:13:36","slug":"weeknummers-2026","status":"publish","type":"page","link":"https:\/\/www.colomio.com\/nl\/weeknummers-2026","title":{"rendered":"Weeknummers 2026"},"content":{"rendered":"<style>\nbody.page-id-189733 .page-author,body.page-id-189733 .dat2,body.page-id-189733 .shariff-buttons,body.page-id-189733 #ez-toc-container,body.page-id-189733 .ez-toc-v2_0_72,body.page-id-189733 .entry-title{display:none!important}\nbody.page-id-189733 .entry-content,body.page-id-189733 .site-content,body.page-id-189733 .inside-article{background:#f7f9fc!important;padding:0!important}\nbody.page-id-189733 .hck2027 *{box-sizing:border-box}\nbody.page-id-189733 .hck2027{font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,\"Segoe UI\",sans-serif;color:#0f172a;background:#f7f9fc;padding:0 0 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summary::after{content:\"\u2212\"}\nbody.page-id-189733 .hck-faq-list details p{margin:0;padding:0 0 18px;color:#64748b;line-height:1.6}\nbody.page-id-189733 .hck-months-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}\nbody.page-id-189733 .hck-month-pill{display:inline-flex;padding:8px 14px;border:1px solid #e5e7eb;border-radius:999px;background:#fff;color:#0f172a;font-weight:600;font-size:.88rem}\nbody.page-id-189733 .hck-month-pill:hover{background:#eff6ff;color:#2563eb;border-color:#2563eb}\nbody.page-id-189733 .hck-prose{padding:24px;color:#0f172a;line-height:1.65;font-size:.95rem}\nbody.page-id-189733 .hck-prose h3{margin:14px 0 6px;font-size:1rem;font-weight:700}\nbody.page-id-189733 .hck-prose p{margin:0 0 10px}\n@media (max-width:960px){body.page-id-189733 .hck-hero-grid{grid-template-columns:1fr}}\n<\/style>\n<p><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.colomio.com\/nl\/weeknummers-2026#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.colomio.com\/nl\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Kalender 2026\",\"item\":\"https:\/\/www.colomio.com\/nl\/kalender-2026\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Weeknummers\"}]},{\"@type\":\"FAQPage\",\"@id\":\"https:\/\/www.colomio.com\/nl\/weeknummers-2026#faq\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Hoeveel weken heeft 2026?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"2026 heeft 53 weken volgens ISO 8601. 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Bevestig bij internationale projecten altijd met een datumbereik.\"}}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.colomio.com\/nl\/weeknummers-2026#webpage\",\"url\":\"https:\/\/www.colomio.com\/nl\/weeknummers-2026\",\"name\":\"Weeknummers 2026 \u2013 alle 53 weken (ISO 8601)\",\"description\":\"Alle weken 2026 (ISO 8601) met data ma\u2013zo, kwartalen en feestdagen.\",\"inLanguage\":\"nl-NL\",\"isPartOf\":{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.colomio.com#website\",\"url\":\"https:\/\/www.colomio.com\/\",\"name\":\"colomio\",\"inLanguage\":\"nl-NL\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.colomio.com\/nl\/weeknummers-2026#breadcrumb\"},\"datePublished\":\"2026-05-30\",\"dateModified\":\"2026-05-30\",\"author\":{\"@type\":\"Person\",\"name\":\"Mathias Ziegler\"},\"publisher\":{\"@type\":\"Organization\",\"@id\":\"https:\/\/www.colomio.com#organization\",\"name\":\"happycolorz GmbH\",\"url\":\"https:\/\/www.colomio.com\/\"},\"mainEntity\":{\"@id\":\"https:\/\/www.colomio.com\/nl\/weeknummers-2026#faq\"}}]}<\/script><\/p>\n<div class=\"hck2027\">\n<section class=\"hck-hero\">\n<div class=\"hck-container hck-hero-grid\">\n<div>\n<nav class=\"hck-breadcrumb\" aria-label=\"Breadcrumb\"><a href=\"https:\/\/www.colomio.com\/nl\/kalender-2026\">Kalender 2026<\/a><span>\u203a<\/span><span>Weeknummers<\/span><span>\u203a<\/span><span>2026<\/span><\/nav>\n<h1>Weeknummers 2026<\/h1>\n<p class=\"hck-author-meta\">Door <a href=\"https:\/\/www.colomio.com\/\" rel=\"author\">Mathias Ziegler<\/a><span class=\"hck-sep\">\u00b7<\/span>Bijgewerkt : <time datetime=\"2026-05-30\">30 mei 2026<\/time><\/p>\n<p class=\"hck-lead\">Alle weken 2026 volgens ISO 8601 \u2014 weeknummer, data (ma\u2013zo), kwartaal en feestdagen in de week.<\/p>\n<div class=\"hck-hero-buttons\"><a class=\"hck-btn hck-btn-primary\" href=\"#table\">Bekijk de weken<\/a><\/div>\n<div class=\"hck-trust-row\"><span class=\"hck-trust-item\">\u2713 ISO 8601<\/span><span class=\"hck-trust-item\">\u2713 53 weken<\/span><span class=\"hck-trust-item\">\u2713 Met feestdagen<\/span><\/div>\n<\/div>\n<aside class=\"hck-card hck-quickfacts\">\n<h2>Weken 2026 in het kort<\/h2>\n<p class=\"hck-qf-sub\">Het belangrijkste<\/p>\n<ul class=\"hck-qf-list\">\n<li><span class=\"hck-qf-icon\" aria-hidden=\"true\">\ud83d\udcc5<\/span><span><span class=\"hck-qf-label\">53 weeks<\/span><span class=\"hck-qf-value\">Weken 2026 in het kort<\/span><\/span><\/li>\n<li><span class=\"hck-qf-icon\" aria-hidden=\"true\">\ud83e\udd47<\/span><span><span class=\"hck-qf-label\">S1 : 29 december 2025<\/span><span class=\"hck-qf-value\">4 januari 2026<\/span><\/span><\/li>\n<li><span class=\"hck-qf-icon\" aria-hidden=\"true\">\ud83c\udfc1<\/span><span><span class=\"hck-qf-label\">S53 : 3 januari 2027<\/span><span class=\"hck-qf-value\">28 december 2026<\/span><\/span><\/li>\n<li><span class=\"hck-qf-icon\" aria-hidden=\"true\">\ud83c\udf0d<\/span><span><span class=\"hck-qf-label\">ISO 8601<\/span><span class=\"hck-qf-value\">La S1 contiene il primo gioved\u00ec dell\u2019anno.<\/span><\/span><\/li>\n<\/ul>\n<\/aside>\n<\/div>\n<\/section>\n<section class=\"hck-section\" id=\"table\">\n<div class=\"hck-container\">\n<div class=\"hck-section-head\">\n<h2>Alle weken 2026<\/h2>\n<\/div>\n<p style=\"margin:0 0 14px;color:#64748b;font-size:.9rem\">Data ma\u2013zo volgens ISO 8601. Feestdagen = nationale feestdagen in de week.<\/p>\n<div class=\"hck-table-wrap\">\n<table class=\"hck-table\" style=\"min-width:680px\">\n<thead>\n<tr>\n<th>Week<\/th>\n<th>Maand<\/th>\n<th>Data (ma \u2013 zo)<\/th>\n<th>Feestdagen<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr class=\"hck-divider\">\n<td colspan=\"4\">Kw4 \u2014 okt-dec<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 1<\/td>\n<td>dec.\/jan.<\/td>\n<td>29.12 \u2013 04.01.2026<\/td>\n<td><span class=\"hck-tag\">Nieuwjaarsdag \u00b7 01.01.<\/span><\/td>\n<\/tr>\n<tr class=\"hck-divider\">\n<td colspan=\"4\">Kw1 \u2014 jan-mrt<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 2<\/td>\n<td>Januari<\/td>\n<td>05.01 \u2013 11.01.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 3<\/td>\n<td>Januari<\/td>\n<td>12.01 \u2013 18.01.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 4<\/td>\n<td>Januari<\/td>\n<td>19.01 \u2013 25.01.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 5<\/td>\n<td>jan.\/feb.<\/td>\n<td>26.01 \u2013 01.02.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 6<\/td>\n<td>Februari<\/td>\n<td>02.02 \u2013 08.02.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 7<\/td>\n<td>Februari<\/td>\n<td>09.02 \u2013 15.02.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 8<\/td>\n<td>Februari<\/td>\n<td>16.02 \u2013 22.02.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 9<\/td>\n<td>feb.\/maa.<\/td>\n<td>23.02 \u2013 01.03.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 10<\/td>\n<td>Maart<\/td>\n<td>02.03 \u2013 08.03.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 11<\/td>\n<td>Maart<\/td>\n<td>09.03 \u2013 15.03.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 12<\/td>\n<td>Maart<\/td>\n<td>16.03 \u2013 22.03.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 13<\/td>\n<td>Maart<\/td>\n<td>23.03 \u2013 29.03.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 14<\/td>\n<td>maa.\/apr.<\/td>\n<td>30.03 \u2013 05.04.2026<\/td>\n<td><span class=\"hck-tag\">Goede Vrijdag \u00b7 03.04.<\/span><span class=\"hck-tag\">Eerste paasdag \u00b7 05.04.<\/span><\/td>\n<\/tr>\n<tr class=\"hck-divider\">\n<td colspan=\"4\">Kw2 \u2014 apr-jun<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 15<\/td>\n<td>April<\/td>\n<td>06.04 \u2013 12.04.2026<\/td>\n<td><span class=\"hck-tag\">Tweede paasdag \u00b7 06.04.<\/span><\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 16<\/td>\n<td>April<\/td>\n<td>13.04 \u2013 19.04.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 17<\/td>\n<td>April<\/td>\n<td>20.04 \u2013 26.04.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 18<\/td>\n<td>apr.\/mei.<\/td>\n<td>27.04 \u2013 03.05.2026<\/td>\n<td><span class=\"hck-tag\">Koningsdag \u00b7 27.04.<\/span><\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 19<\/td>\n<td>Mei<\/td>\n<td>04.05 \u2013 10.05.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 20<\/td>\n<td>Mei<\/td>\n<td>11.05 \u2013 17.05.2026<\/td>\n<td><span class=\"hck-tag\">Hemelvaartsdag \u00b7 14.05.<\/span><\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 21<\/td>\n<td>Mei<\/td>\n<td>18.05 \u2013 24.05.2026<\/td>\n<td><span class=\"hck-tag\">Eerste Pinksterdag \u00b7 24.05.<\/span><\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 22<\/td>\n<td>Mei<\/td>\n<td>25.05 \u2013 31.05.2026<\/td>\n<td><span class=\"hck-tag\">Tweede Pinksterdag \u00b7 25.05.<\/span><\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 23<\/td>\n<td>Juni<\/td>\n<td>01.06 \u2013 07.06.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 24<\/td>\n<td>Juni<\/td>\n<td>08.06 \u2013 14.06.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 25<\/td>\n<td>Juni<\/td>\n<td>15.06 \u2013 21.06.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 26<\/td>\n<td>Juni<\/td>\n<td>22.06 \u2013 28.06.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 27<\/td>\n<td>jun.\/jul.<\/td>\n<td>29.06 \u2013 05.07.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr class=\"hck-divider\">\n<td colspan=\"4\">Kw3 \u2014 jul-sep<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 28<\/td>\n<td>Juli<\/td>\n<td>06.07 \u2013 12.07.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 29<\/td>\n<td>Juli<\/td>\n<td>13.07 \u2013 19.07.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 30<\/td>\n<td>Juli<\/td>\n<td>20.07 \u2013 26.07.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 31<\/td>\n<td>jul.\/aug.<\/td>\n<td>27.07 \u2013 02.08.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 32<\/td>\n<td>Augustus<\/td>\n<td>03.08 \u2013 09.08.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 33<\/td>\n<td>Augustus<\/td>\n<td>10.08 \u2013 16.08.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 34<\/td>\n<td>Augustus<\/td>\n<td>17.08 \u2013 23.08.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 35<\/td>\n<td>Augustus<\/td>\n<td>24.08 \u2013 30.08.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 36<\/td>\n<td>aug.\/sep.<\/td>\n<td>31.08 \u2013 06.09.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 37<\/td>\n<td>September<\/td>\n<td>07.09 \u2013 13.09.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 38<\/td>\n<td>September<\/td>\n<td>14.09 \u2013 20.09.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 39<\/td>\n<td>September<\/td>\n<td>21.09 \u2013 27.09.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 40<\/td>\n<td>sep.\/okt.<\/td>\n<td>28.09 \u2013 04.10.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 41<\/td>\n<td>Oktober<\/td>\n<td>05.10 \u2013 11.10.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 42<\/td>\n<td>Oktober<\/td>\n<td>12.10 \u2013 18.10.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 43<\/td>\n<td>Oktober<\/td>\n<td>19.10 \u2013 25.10.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 44<\/td>\n<td>okt.\/nov.<\/td>\n<td>26.10 \u2013 01.11.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 45<\/td>\n<td>November<\/td>\n<td>02.11 \u2013 08.11.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 46<\/td>\n<td>November<\/td>\n<td>09.11 \u2013 15.11.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 47<\/td>\n<td>November<\/td>\n<td>16.11 \u2013 22.11.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 48<\/td>\n<td>November<\/td>\n<td>23.11 \u2013 29.11.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 49<\/td>\n<td>nov.\/dec.<\/td>\n<td>30.11 \u2013 06.12.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 50<\/td>\n<td>December<\/td>\n<td>07.12 \u2013 13.12.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 51<\/td>\n<td>December<\/td>\n<td>14.12 \u2013 20.12.2026<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 52<\/td>\n<td>December<\/td>\n<td>21.12 \u2013 27.12.2026<\/td>\n<td><span class=\"hck-tag\">Eerste Kerstdag \u00b7 25.12.<\/span><span class=\"hck-tag\">Tweede Kerstdag \u00b7 26.12.<\/span><\/td>\n<\/tr>\n<tr>\n<td class=\"hck-num\">S 53<\/td>\n<td>dec.\/jan.<\/td>\n<td>28.12 \u2013 03.01.2027<\/td>\n<td>&nbsp;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"hck-section\">\n<div class=\"hck-container\">\n<div class=\"hck-section-head\">\n<h2>Veelgestelde vragen<\/h2>\n<\/div>\n<div class=\"hck-card hck-faq-list\">\n<details>\n<summary>Hoeveel weken heeft 2026?<\/summary>\n<p>2026 heeft 53 weken volgens ISO 8601. Het is een jaar met 53 weken (zeldzaam, om de 5\u20136 jaar).<\/p>\n<\/details>\n<details>\n<summary>Wanneer begint week 1 van 2026?<\/summary>\n<p>Week 1 van 2026 begint op maandag 29 december 2025 en eindigt op zondag 4 januari 2026.<\/p>\n<\/details>\n<details>\n<summary>Wat betekent ISO 8601?<\/summary>\n<p>Dat is de internationale norm voor weeknummers: week 1 is de week met de eerste donderdag van het jaar (de week van 4 januari). De week begint altijd op maandag.<\/p>\n<\/details>\n<details>\n<summary>In welke week valt Pasen 2026?<\/summary>\n<p>La domenica di Pasqua 2026 \u00e8 il 5 april 2026 \u2014 settimana 14.<\/p>\n<\/details>\n<details>\n<summary>Hoe tellen de VS weeknummers?<\/summary>\n<p>In de VS en Canada is week 1 de week met 1 januari en begint de week op zondag. Bevestig bij internationale projecten altijd met een datumbereik.<\/p>\n<\/details>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"hck-section\">\n<div class=\"hck-container\">\n<div class=\"hck-section-head\">\n<h2>Maandkalenders 2026<\/h2>\n<\/div>\n<div class=\"hck-months-row\"><a class=\"hck-month-pill\" href=\"https:\/\/www.colomio.com\/nl\/januari-2026-kalender\">Januari<\/a><a class=\"hck-month-pill\" href=\"https:\/\/www.colomio.com\/nl\/februari-2026-kalender\">Februari<\/a><a class=\"hck-month-pill\" href=\"https:\/\/www.colomio.com\/nl\/maart-2026-kalender\">Maart<\/a><a class=\"hck-month-pill\" href=\"https:\/\/www.colomio.com\/nl\/april-2026-kalender\">April<\/a><a class=\"hck-month-pill\" href=\"https:\/\/www.colomio.com\/nl\/mei-2026-kalender\">Mei<\/a><a class=\"hck-month-pill\" href=\"https:\/\/www.colomio.com\/nl\/juni-2026-kalender\">Juni<\/a><a class=\"hck-month-pill\" href=\"https:\/\/www.colomio.com\/nl\/juli-2026-kalender\">Juli<\/a><a class=\"hck-month-pill\" href=\"https:\/\/www.colomio.com\/nl\/augustus-2026-kalender\">Augustus<\/a><a class=\"hck-month-pill\" href=\"https:\/\/www.colomio.com\/nl\/september-2026-kalender\">September<\/a><a class=\"hck-month-pill\" href=\"https:\/\/www.colomio.com\/nl\/oktober-2026-kalender\">Oktober<\/a><a class=\"hck-month-pill\" href=\"https:\/\/www.colomio.com\/nl\/november-2026-kalender\">November<\/a><a class=\"hck-month-pill\" href=\"https:\/\/www.colomio.com\/nl\/december-2026-kalender\">December<\/a><\/div>\n<\/div>\n<\/section>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Kalender 2026\u203aWeeknummers\u203a2026 Weeknummers 2026 Door Mathias Ziegler\u00b7Bijgewerkt : 30 mei 2026 Alle weken 2026 volgens ISO 8601 \u2014 weeknummer, data (ma\u2013zo), kwartaal en feestdagen in de week. Bekijk de weken \u2713 ISO 8601\u2713 53 weken\u2713 Met feestdagen Weken 2026 in het kort Het belangrijkste \ud83d\udcc553 weeksWeken 2026 in het kort \ud83e\udd47S1 : 29 december 20254 &#8230; <a title=\"Weeknummers 2026\" class=\"read-more\" href=\"https:\/\/www.colomio.com\/nl\/weeknummers-2026\" aria-label=\"Lees meer over Weeknummers 2026\">Lees verder<\/a><\/p>\n","protected":false},"author":0,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_yoast_wpseo_title":"Weeknummers 2026 \u2013 alle 53 weken (ISO 8601)","_yoast_wpseo_metadesc":"Alle weken 2026 (ISO 8601) met data ma\u2013zo, kwartalen en feestdagen.","_yoast_wpseo_bctitle":"","_colomio_max_video_preview":"","_colomio_max_image_preview":"","_colomio_max_snippet":"","_custom_article_jsonld":"","_custom_howto_jsonld":"","_custom_schema_jsonld":"","category-page":false,"footnotes":""},"class_list":["post-189733","page","type-page","status-publish"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Weeknummers 2026 \u2013 alle 53 weken (ISO 8601)<\/title>\n<meta name=\"description\" content=\"Alle weken 2026 (ISO 8601) met data ma\u2013zo, kwartalen en feestdagen.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.colomio.com\/nl\/weeknummers-2026\" \/>\n<meta property=\"og:locale\" content=\"nl_NL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Weeknummers 2026 \u2013 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