# dayinyr¶

## Purpose¶

Returns day number in the year of a given date.

## Format¶

daynum = dayinyr(dt)
Parameters: dt (3x1 or 4x1 vector) – A date in a 4-element column vector, in the order: year, month, day, and hundredths of a second since midnight. Same format as the date() function return. daynum (scalar) – the day number of that date in that year.

## Examples¶

// Date
x = { 1973, 8, 31, 0 };

// Find the day number of date
y = dayinyr(x);
print y;


produces:

y = 243.00000


## Source¶

time.src

### Globals¶

_isleap