Frustrating datetime and datestr

Hey I got this

 hund = datetime(end_stamp, 'convertfrom','posixtime')

 % which give this:
hund = 
  datetime
   05-Nov-2018 00:00:00

Because this one hit time 00:00:00 and I use datestr i get this:

hund = datestr(hund)
hund = '05-Nov-2018'

But I need to get the exact line as a string:

hund = '05-Nov-2018 00:00:00'

Anyone have an idea ?

[Stephen23]

Rather than using deprecated DATESTR, it is much better to stick with the DATETIME object itself:

t = datetime('03-Nov-2018 00:00:00','InputFormat','dd-MMM-yyyy HH:mm:ss')

t = datetime
   03-Nov-2018

t.Format = 'dd-MMM-yyyy HH:mm:ss'

t = datetime
   03-Nov-2018 00:00:00

Answer 1

[jonas]

Not sure why you'd want to convert from datetime to datestr, but here's your solution:

datestr(t,'dd-mmm-yyyy HH:MM:SS')

Answer 2

[Martin]

thanks for answer. Let me say whats confusing me. If I use

 t = datetime('03-Nov-2018 00:00:00','InputFormat','dd-MMM-yyyy HH:mm:ss');

Here the format is 'dd-MMM-yyyy HH:mm:ss' (the string is input)..

On the other hand with datestr I now use this (thanks jonas)

datestr(t,'dd-mmm-yyyy HH:MM:SS')

the format is 'dd-mmm-yyyy HH:MM:SS'.

Im confused since the format

'dd-MMM-yyyy HH:mm:ss' ~= 'dd-mmm-yyyy HH:MM:SS'

[jonas]

I don't know if there is a reason, but the format differs depending on function. In datetime the month is capital letters and in datestr they are not. It is described in the documentation, but I don't know the reason for this.

[Martin]

yeah okay, a bit strange in my opinion. Anyway, now it works thanks to you :)

[Stephen23]

"I don't know if there is a reason"

The deprecated DATESTR/DATENUM, etc used a simple, consistent, venerable format presumably devised by TMW.

In contrast DATETIME uses the Unicode Locale Data Markup Language (LDML) standard for dates and times:

https://unicode.org/reports/tr35/tr35-dates.html#Date_Format_Patterns

as documented here:

https://www.mathworks.com/help/matlab/ref/datetime.html#buhzxmk-1-Format