Fraction of a day to HH:MM:SS

Good day everyone.

I have a date, 17037.46688591, and want to convert it to a datetime.

I'm not sure what to include in the datetime InputFormat to allow for the fraction of a day to get the HH:MM:SS.

I can get the date:

inputdate = '17037.46688591';
jday = inputdate(1:5);
date = datetime(jday,'InputFormat','yyDDD')
     date = 06-Feb-2017

How do I get .46688591 into HH:MM:SS?

I've tried a few things but I must be doing something wrong. Thanks for the help.

Answer 1

[Guillaume]

This would work:

inputdate = '17037.46688591';
jday = inputdate(1:5);
date = datetime(jday, 'InputFormat', 'yyDDD') + days(mod(str2double(inputdate), 1))

assuming that .46688591 is a fraction of a day.

[Charlie Wood]

Awesome, thank you. Answer came out exactly as needed. Didn't think to just use days() to turn it into a duration. I think I need more coffee/practice. Thanks again.