Analyze Data for last complete Calendar week prior to current date

I am at basic level in Coding with Matlab, will very much like my function to return the start and end-dates of the last full calendar week prior to today's date (full Calendar week from Sunday - Saturday). For example; if today is Monday, 20th Sep 2021, the function should return:

Start_Weekdate = '12-Sep-2021' and End_Weekdate = '18-Sep-2021'.

I unfortunately do not know how to define the appropriate Calendar Weekdate reference

function AnalyseWeekInterval(Home, START_Weekdate, END_Weekdate)

%prepare Tiem frame to analyse

START_Weekdate= datetime(FIRSTWEEKDAYDATE, 'TimeZone','local','InputFormat','dd-mmm-yyyy');

END_Weekdate= datetime(LASTWEEKDAYDATE, 'TimeZone','local','InputFormat','dd-mmm-yyyy');

end

I will appreciate your expertise on this.

Thanks in Advance

Answer 1

[Siddharth Bhutiya]

There might be a couple of ways to do this, but the function that you are looking for is dateshift.

https://www.mathworks.com/help/matlab/ref/datetime.dateshift.html

>> dt = datetime(2021,9,20); % Our date of interest
>> End_Weekdate = dateshift(d,'dayofweek','Saturday','previous') % Get the date of the previous Saturday using dateshift

End_Weekdate = 

  datetime

   18-Sep-2021

>> Start_Weekdate = End_Weekdate - caldays(6) % Subtract 6 calendar days from it to get the date for the start of the week

Start_Weekdate = 

  datetime

   12-Sep-2021

[Lambert Desa]

@Siddharth Bhutiya: perfect, I am truely grateful for your solution, its concise and efficient. I really should think less complicated sometimes.

Regards,

Lambert