How to collect number of days from a month in excel - excel

I have a column which will have some days from a month in dd-mm-yyyy format. What I need to get total number of days from each month mentioned in that column. The column might not contain all days from each month.
Example :
Column A :
2017-01-01
2017-01-02
2017-01-17
2017-01-27
2017-02-08
In above example, from 2017 Jan, I have 4 days and from Feb I have one day. I need this count for a IF statement to run in C column. ie, in C1 there will be an IF function which will check the month in A1 and count the total number of days for that specific month from A column. If that count is below a specific digit, I need to perform a formula otherwise a different one. This will repeat for all C cell
If this column contains all date from each month I can use Day function to get total days, but here how Can I collect it

This will work: =SUMPRODUCT(1*(MONTH($A1:$A5)=D1))
And an example of manipulating basing on the result:
=IF(SUMPRODUCT(1*(MONTH($A1:$A5)=D1))<3;"good";"bad")
Another one when row number represents a month (JAN in C1, FEB in C2...):
=IF(SUMPRODUCT(1*(MONTH($A1:$A5)=ROW()))<3;"good";"bad")
In your case:
=IF(SUMPRODUCT(1*(MONTH($A1:$A5)=ROW()))<10;function1();function2())

Array formula - use Ctrl+Shift+Enter:
=SUM((MONTH($A$1:$A$5)=MONTH(A1))*(YEAR($A$1:$A$5)=YEAR(A1)))

Related

Excel Date Formula + 3 Months

I am looking to have a formula that takes the date that is manually input in a cell (E2) and automatically populates a date in the column next to it (F2) that is + 3 months from the date manually input in (E2).
eg. If (E2) has 03/11/2021 input manually then the formula in (F2) would populate 03/02/2021. image of part of the sheet
Is this what you are looking for?
=DATE(YEAR(A1),MONTH(A1)+X,DAY(A1))
where X = 3
One can use EDATE():
=EDATE(A1,3)
The second criteria is the number of Months to add.
EDATE will go to the number of months then try to equate the day. If the day exceeds the number of days in the target month it returns the last day of the target month.
For example =EDATE(DATE(2021,11,30),3) will return the 28th of February 2021.

Excel count if date range is active in a certain month

I have 2 date, a start date and end date. I want to be able to count if these were active through a certain month.
Row 1: start date 20/11/2020, end date 03/02/2021.
Row 2: start date 03/01/2021, end date 15/03/2021
Row 2: start date 12/01/2021, end date 31/03/2021,
The columns I have are the months and based on the above data this is the expected result.
Nov 1
Dec 1
Jan 3
Feb 3
Mar 2
Is there a formula that I can use to count this through a range of 100's of rows?
A simpler method than what you posted in your comment.
Put your start/end dates in a Table and name it StartEndTbl
Create a column of months whereby
Each entry is the first day of the month
The column is formatted mmm-yyy
In the first cell (F2 in this case), enter the formula:
F2: =SUM((StartEndTbl[Start]<=EOMONTH(E2,0))*(StartEndTbl[End]>=E2))
and fill down as far as needed

SUMPRODUCT difference between two dates for THIS WEEK entries only

I have a column D containing all the Dates in DD/MM/YYYY format, and I would like to show the count of missed days for THIS WEEK values only from all the entries in column D.
In other words, if there is a difference between two Dates in column D and it occured this week, I would like to count it.
I have below formula to calculate "Total days missed" between first and the last entry in Dates column D, however I can't adopt this formula to display "Days Missed" for THIS WEEK only entries.
=SUMPRODUCT(--ISNA(MATCH(ROW(INDIRECT(MIN($D$18:$D$500)&":"&MAX($D$18:$D$500)));$D$18:$D$500;0)))
Sample of data set.
Please help, thanks.
For O365, in accord with your statement that there can be multiple entries of one date, I suggest the following (assuming your dates are real dates and not text strings that happen to look like dates):
Total Missing Dates
=MAX($D$18:$D$500)- MIN($D$18:$D$500)+1-COUNT(UNIQUE($D$18:$D$500))
Missing Dates THIS WEEK obviously, you'll need to define the first and last dates of THIS WEEK
=7-COUNT(FILTER(UNIQUE($D$18:$D$500),(UNIQUE($D$18:$D$500)>=wkStart)*(UNIQUE($D$18:$D$500)<=wkEnd)))
If your week starts on Monday, you can calculate:
wkStart: =TODAY()+1-WEEKDAY(TODAY()-1)
wkEnd: =wkStart+6
More generally, to return a particular day of the week prior to someDate (or wkStart):
wkStart = someDate - WEEKDAY(someDate - DayOfWeek)
where DayOfWeek is: Sunday=1 Monday=2 , etc
So, making someDate = TODAY()+1 ensures that if today is monday, it will return today and not the monday from a week ago.
HINT: It might be more convenient to define wkStart and wkEnd as a Named formula.

How get a value looking only for last day of a given month available?

In column A I have a list of dates and in column B I have values:
A B
01/01/2020 10
28/01/2020 20
03/02/2020 30
04/03/2020 40
How to get (for example value 20) looking only for last day of a given month (for example January) available?
You can use MAXIFS to get the last date in the month and VLOOKUP to get the matching value e.g. if the month number is in C2:
=VLOOKUP(MAXIFS(A2:A5,A2:A5,">="&DATE(2020,C2,1),A2:A5,"<="&EOMONTH(DATE(2020,C2,1),0)),A2:B5,2,FALSE)
EOMONTH with a zero gives you the last day in the current month (i.e. 31/1/20 in this case)

Find last digits with IF

I have lots of cells in the spreadsheet that contains the whole year, date and stock prices, but I only need the dates from 25th of the last month till the 5th of this month.How can I write a function to do that? For example if the cells are like this in the column:
19900101
19900102
19900103
19900104
19900105
.
.
19900125
19900126
19900127
19900128
19900129
19900130
19900131
I want it to show only days (1,2,3,4,5,25,26,27,28,29,30,31) with the date format.
The date shows in the text format and I've tried format cell to change it but it doesn't work.
For a slightly different approach, assuming you want to return the A2 value only if it represents a date in the last 5 or first 5 days of any month you can use this formula in B2
=IF(DAY(TEXT(A2,"0000-00-00")+5)<11,A2,"")
TEXT function converts your data to a real date then if you add 5 days to that date then any date that was originally in the last 5 or first 5 of the month will now be in the first 10 days of the month.....so it's sufficient to check that the day is < 11. That will pick up 27th to 31st of a 31 day month, 26th to 30th of a 30 day month etc.
you could use a formula and then filter by rows with data...
As an example (given it's difficult to discern if you always want the first 5 and last 5 of a month or what....)
=IF(RIGHT(A2,2)*1<=2,A2,IF(RIGHT(A2,2)*1>=29,A2,""))
Based on all the edits and comments, these should be the function you need.
=IF(OR(A7-A2>5,MOD(A2,100)<=5),DATE(LEFT(A2,4),MID(A2,5,2),RIGHT(A2,2)),"")
You should place it in cell B2 and then do all the desired filtering, as explained in xQbert's answer.

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