How to find the first business date of a week in MATLAB?

Question

We can use fbusdate to get the first business day of a month:

Date = fbusdate(Year, Month);

However, how do we get the first business day of a week?

As an example, during the week that I'm posting this, Monday 09/07/2017 was a holiday in the US:

isbusday(736942) % = 0

How do I determine that the first business day for this week would be the next day 736943?

Answer 1

I'm not aware of a builtin function that returns the first working day of a week, but you can obtain it by requesting the next working day after Sunday:

busdate(736941); % 736941 = Sunday 09/03/2017

Answer 2

Your desired fbusdateweek function can be done in one line using just the function weekday to get the first Sunday of the week then busdate to get the next business day after that:

dn = 736942;  % Date number for any day in a week
Date = busdate(dn-weekday(dn)+1);

Note: busdate uses the function holidays by default to get all holidays and special nontrading days for the New York Stock Exchange. If necessary, you can define an alternate set of holidays for busdate to use as follows:

holidayArray = ...;  % Some set of date numbers, vectors, or datetimes
Date = busdate(dn-weekday(dn)+1, 1, holidayArray);

This way you can define a set of localized holidays.