Mlungu Number Calculator
Pezani ISO tsiku lotsatira ndi tsiku la chaka kwa tsiku lililonse.
Zithunzizi zimasintha monga momwe mumalemba.
Zachidule
A week number calculator returns the ISO 8601 week number for a date — the standard used across business, logistics and Europe, where weeks run Monday to Sunday and week 1 is the week containing the first Thursday of the year. It also gives the ISO week-numbering year, the calendar quarter, the day-of-year number and how many weeks are left in the year.
Under the ISO rule a year has 52 or 53 weeks, each running Monday to Sunday, and week 1 is defined as the week that holds the year’s first Thursday (equivalently, the week containing 4 January). This is why a date in the first days of January can still belong to the last week of the previous year, and a late-December date can already sit in week 1 of the next year — the tool reports the ISO week-numbering year separately so that mismatch is clear.
For example, 1 January 2026 falls in ISO week 1 of 2026, but 1 January 2023 (a Sunday) sits in ISO week 52 of 2022. Manufacturing, shipping, publishing and European payroll systems schedule by these "CW" or "KW" week numbers, so this is the tool for answering "what week number is it", planning a delivery for "week 34", or checking which quarter a date belongs to.
Mafunso ofunsidwa nthawi zambiri
Kodi ndi ISO tsiku lotsatira mnda wafotokozedwa?
Pambuyo ISO 8601 masiku ayamba pa Monday ndi tsiku 1 ndi tsiku lomwe lili ndi tsiku loyamba la chaka - mofanana, tsiku lomwe lili ndi 4 January.This ndi chifukwa chake kuyamba January ndi kumapeto kwa December masiku angagwiritsidwe ntchito kwa chaka chozungulira.
N’chifukwa chiyani zaka za ISO zimasiyana ndi zaka za kalendala?
Dates in the first days of January can fall in the last ISO week of the previous year, and late December dates can fall in the week 1 of the next year. The ISO week-numbering year reflects which year the week belongs to.
Kodi m'chaka chachitatu ndi tsiku mu?
The quarter is the calendar quarter of the ordinary date: Q1 is January–March, Q2 April–June, Q3 July–September and Q4 October–December.
Kodi masiku angati ali mu chaka?
Pamene ISO 8601 chaka ali 52 sabata mu zaka zambiri ndi 53 mu m'manja (kapena pamene 1 January kapena chaka chapita 31 December afika pa Thursday). The chida amasonyeza inu mmene ISO sabata ali 52 sabata m'manja mu chaka chatsopano.
Kodi pali kusiyana kotani pakati pa ISO ndi US sabata kuwerengetsa?
ISO masiku ayamba pa Lachisanu ndi tsiku 1 tsiku loyamba Thursday. The US mgwirizano wofala amayamba masiku pa Lachisanu ndi kufunsa tsiku la 1 January tsiku 1. This calculator uses the ISO standard, so numbers can differ by one from a US calendar.
Kodi CW kapena KW zikutanthauza pa kalendala?
CW (kalendale sabata) ndi German KW (Kalenderwoche) ndi zolemba zokha kwa ISO sabata mnda - CW 34 ndi ISO sabata 34. Kulowa tsiku lililonse mu chaka kuti atsimikizire CW / KW izo ali.
API — kugwiritsa ntchito izi calculator kuchokera code
Kuti mudziwe zambiri, pitani ku www.json.org/json.html. Kuti mudziwe zambiri, pitani ku www.json.org/json.html. Chomweko chilichonse chimene mumasiya chimagwiritsa ntchito mfundo yoyamba yomweyi yomwe tsambali limagwiritsa ntchito; mfundo yosadziwika ndi 400, siyiyenera kukhala zero yosadziwika. Onani zonse API docs →
Chithunzi
GET https://calculator.free/api/v1/week-number/curl
curl "https://calculator.free/api/v1/week-number/?date=2026-09-08"JavaScript fetch()
const r = await fetch(
"https://calculator.free/api/v1/week-number/?" + new URLSearchParams({
"date": "2026-09-08"
}));
const data = await r.json();
console.log(data.results);Zimenezi ndi zowerengera zokhudzana ndi malangizo amtundu uliwonse, si zokhudzana ndi ndalama, zamoyo kapena zokhudzana ndi ndalama.