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Sut i drosi rhif wythnos hyd yma neu i'r gwrthwyneb yn Excel?

A oes ffordd i gael rhif yr wythnos o ddyddiad penodol neu dynnu'r ystod dyddiad o rif wythnos a blwyddyn benodol yn Excel? I ddatrys y dasg hon, gall y fformwlâu canlynol ffafrio chi.

Trosi rhif yr wythnos hyd yma gyda fformwlâu

Trosi rhif i wythnos yr wythnos gyda fformwlâu

Trosi rhif yr wythnos hyd yma gyda fformwlâu

Gan dybio bod gen i rif blwyddyn ac wythnos ar hap sef 2015 a 15 mewn taflen waith fel y llun isod, a nawr rydw i eisiau darganfod y dyddiadau penodol o ddydd Llun i ddydd Sul erbyn y rhif wythnos penodol hwn.

I gyfrifo'r ystod dyddiad yn ôl y rhif wythnos penodol, gallwch ddefnyddio'r fformwlâu canlynol:

1. Dewiswch gell wag byddwch yn dychwelyd y dyddiad cychwyn (yn ein hachos ni, rydym yn dewis y Cell B5), nodwch y fformiwla: =MAX(DATE(B1,1,1),DATE(B1,1,1)-WEEKDAY(DATE(B1,1,1),2)+(B2-1)*7+1), a gwasgwch y Rhowch allwedd. Gweler y screenshot isod:

2. Dewiswch gell wag arall y byddwch chi'n dychwelyd y dyddiad gorffen (yn ein hachos ni, rydyn ni'n dewis y Cell B6), nodwch =MIN(DATE(B1+1,1,0),DATE(B1,1,1)-WEEKDAY(DATE(B1,1,1),2)+B2*7), a gwasgwch y Rhowch allwedd. Gweler y screenshot isod:

rhuban nodyn Mae fformiwla yn rhy gymhleth i'w gofio? Cadwch y fformiwla fel cofnod Testun Auto i'w ailddefnyddio gyda dim ond un clic yn y dyfodol!
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Nodyn: Yn y ddau fformiwla uchod, B1 yn cynnwys blwyddyn a B2 yn rhif wythnos penodedig, gallwch newid y dadleuon i'ch angen).

3. Fel y gwelwch, mae'r ddau fformiwla yn dychwelyd rhifau yn lle dyddiadau. Daliwch i ddewis y ddau gyfrifo canlyniadau, a chlicio Hafan > Fformat Rhif blwch> Dyddiad Byr i newid y rhifau i ddyddiadau. Gweler y screenshot isod:

Un clic i drosi dyddiadau / rhifau / testun fformatio ansafonol lluosog i ddyddiadau arferol yn Excel

Kutools ar gyfer Excel's Trosi hyd yn hyn gall cyfleustodau eich helpu chi i adnabod a throsi dyddiadau neu rifau ansafonol (yyyymmdd) neu destun i ddyddiadau arferol gyda dim ond un clic yn Excel.

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trosi hyd yn 1

Trosi rhif i wythnos yr wythnos gyda fformwlâu

Ar y llaw arall, gallwch hefyd gymhwyso'r swyddogaeth WYTHNOS i drosi dyddiad i rif wythnos cyfatebol.

1. Dewiswch gell wag y byddwch yn dychwelyd rhif yr wythnos, nodwch y fformiwla hon: = WYTHNOS (B1,1), a gwasgwch y fysell Enter. Gweler y screenshot:

Nodiadau:

(1) Yn y fformiwla uchod, B1 yn cynnwys y dyddiad rydych chi am ei ddefnyddio.

(2) Os bydd angen i chi ddychwelyd rhif yr wythnos o ddyddiad sy'n dechrau ddydd Llun, defnyddiwch y fformiwla hon: = WYTHNOS (B1,2).

Erthyglau cysylltiedig:

Sut i gyfrif nifer y diwrnodau wythnos penodol rhwng dau ddyddiad yn Excel?

Sut i ychwanegu / tynnu diwrnodau / misoedd / blynyddoedd hyd yma yn Excel?

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Comments (24)
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denmark
denmark
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so much complicated.

just hit this one

=TEXT(A2 - (WEEKDAY(A2,2)) + 1, "MMM DD") & " - " & TEXT(A2 + 7 - (WEEKDAY(A2,2)), "MMM DD")
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Long
Long
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All of these formulas have issues when the date is in the last week of the year. They don't give the correct date for Monday of the last week.
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nair.srijith@gmail.com
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I find this better "Start of week"
B5=(8-WEEKDAY(DATE(B1,1,1),1))+((B2-2)*7)+DATE(B1,1,1)

8-WEEKDAY(DATE(B1,1,1),1) => find the no. of days in a week for first week of the year
(B2-2)*7 => calculate the number of days excluding the first week of year and the week for which calculation is being done
Then add these 2 to the first day of the year to get first day of the desired week


Then "End of week",
B6=B5+6

PS:
Week starts on Sunday
For weeks starting on Monday, use this instead:
B5=(8-WEEKDAY(DATE(B1,1,1),2))+((B2-2)*7)+DATE(B1,1,1)
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Fabian
Fabian    
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Your formula works perfectly for every year. End of week would be B6=B5+6 though. Thanks a lot!
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nair.srijith@gmail.com
    Fabian
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Thanks. Will correct that...
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Ryan
Ryan
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This formula is overly complicated. If you have a date say 8/17/2021 in Cell A1, to get the Week Ending(as of Saturday) you just need the following: = A1-WEEKDAY(A1,1)+7This will return 8/21/2021. Date of 12/30/2020 will return 1/2/2021 as week ending.
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GILLY2801
GILLY2801
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Hi,

not sure if this has been asked, but essentially, I want to be able to drag the date and the week number automatically fill beside it when I do that.

Can anyone help?

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Mikeman145
Mikeman145     GILLY2801
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@gilly2801 you can use an array formula for example with "=weeknum(C2:C)" press command shift enter and it will turn it into an array function.
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Biswajit
Biswajit
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Hi please help me.

Suppose we are considering Date 1 to 7 is week 1 and 8 to 14 is week 2. Can you please help me out how can i use if function to calculate week. I have tried but not able to get the correct result.
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nair.srijith@gmail.com
    Biswajit
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=ROUNDUP((TODAY()-DATE(YEAR(TODAY()),1,1))/7,0)
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Srijith
Srijith     Biswajit
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=ROUNDUP((TODAY()-DATE(YEAR(TODAY()),1,1))/7,0)
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jtaylorg91
jtaylorg91
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Thank YOU!!!!
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geoffsmile
geoffsmile
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Thank you very much!


=CONCATENATE("Inclusive Dates: ",TEXT(MAX(DATE(TEXT(TODAY(),"yyyy"),1,1),DATE(TEXT(TODAY(),"yyyy"),1,1)-WEEKDAY(DATE(TEXT(TODAY(),"yyyy"),1,1),2)+(WEEKNUM(TODAY())-1)*7+1),"MMMM")," ",TEXT(MAX(DATE(TEXT(TODAY(),"yyyy"),1,1),DATE(TEXT(TODAY(),"yyyy"),1,1)-WEEKDAY(DATE(TEXT(TODAY(),"yyyy"),1,1),2)+(WEEKNUM(TODAY())-1)*7+1),"DD"),", ",TEXT(MAX(DATE(TEXT(TODAY(),"yyyy"),1,1),DATE(TEXT(TODAY(),"yyyy"),1,1)-WEEKDAY(DATE(TEXT(TODAY(),"yyyy"),1,1),2)+(WEEKNUM(TODAY())-1)*7+1),"YYYY")," - ",TEXT(MIN(DATE(TEXT(TODAY(),"yyyy")+1,1,0),DATE(TEXT(TODAY(),"yyyy"),1,1)-WEEKDAY(DATE(TEXT(TODAY(),"yyyy"),1,1),2)+WEEKNUM(TODAY())*7),"MMMM")," ",TEXT(MIN(DATE(TEXT(TODAY(),"yyyy")+1,1,0),DATE(TEXT(TODAY(),"yyyy"),1,1)-WEEKDAY(DATE(TEXT(TODAY(),"yyyy"),1,1),2)+WEEKNUM(TODAY())*7),"DD"),", ",TEXT(MIN(DATE(TEXT(TODAY(),"yyyy")+1,1,0),DATE(TEXT(TODAY(),"yyyy"),1,1)-WEEKDAY(DATE(TEXT(TODAY(),"yyyy"),1,1),2)+WEEKNUM(TODAY())*7),"YYYY"))
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seld
seld
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Date(2017;1;7 * weeknumer - 5) 5 monday, 4 tuesday... :)
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Katy
Katy     seld
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Or to make in not specific to the year 2017...
=DATE(YEAR,1,7 * WEEKNUM - WEEKDAY(DATE(YEAR,1,7) - 2))

2 monday, 3 tuesday,...
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Lynnwood
Lynnwood
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I'm sorry folks, but I could neither understand nor make work any of the formulas above so I finally figured out the following solution: DATE(B1,1,1)+($A4×7)−(6−(7−WEEKDAY(DATE(B1,1,1),first-day))) The first part "DATE(B1,1,1)+(B2×7)" simply takes January 1 of the year and adds the number of weeks. The next part calculates how many days to subtract from the WEEKDAY of January 1 to get the first day of the week. This is what I finally figured out: 6−(7−WEEKDAY(DATE(B1,1,1),first-day)) If, for example, January 1 falls on a Sunday (day 7), then this formula become "6-(7-7)" or simply 6 - which is the number of days you need to subtract to get Monday of that week. Try other days. Finally, if you want to find any other day of the week, just add the WEEKDAY number minus 1 to this result. So the last day of the week (Sunday) is: DATE(B1,1,1)+($A4×7)−(6−(7−WEEKDAY(DATE(B1,1,1),first-day)))+(7−1) Which can be simplified to: DATE(B1,1,1)+($A4×7)−(12−(7−WEEKDAY(DATE(B1,1,1),first-day))) Wednesday would be: DATE(B1,1,1)+($A4×7)−(8−(7−WEEKDAY(DATE(B1,1,1),first-day))) etc. I hope this helps someone else who needs this both with a workable solution along with a bit of understanding of how it was arrived at!
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