Conversion of cumulate day of the year and year into Date/Month/Year

If I have a date in format, for example; 344th day of 1970, how to covert it to Day/Month/Year format (datetime)?

Answer 1

[Star Strider]

The datetime function is remarkably robust (more so that I previously appreciated)!

Try this —

D = datetime(1970,1,344)

D = datetime
   10-Dec-1970

Check = day(D,'dayofyear')                      % Check

Check = 344

.