Re: Convert Epoch Date to Serial Date

[Fritz Sonnichsen]

Thanks Anthony.
  That seems to work after some code like this.
    t=localtime(epoch_date)
bf=sprintf("%d/%d/%d,%d:%d:%d",t.year+1900,t.mon+1,t.mday,t.hour,t.min,t.sec)
    DTformat='yyyy/mm/dd,HH:MM:SS';
    datenum(bf,DTformat)
    numerical_date = datenum(bf,DTformat); %days from January 0, 0000

after some thought the same result can be obtained as follows;
    numerical_date=  dtetmenum(1)/86400 + datenum(1970,1,1)

would be nice if this was included as an "epoch2serial" utility just to 
keep make it easy to remember!

cheers
Fritz

On 4/10/2019 2:33 PM, Richardson, Anthony wrote:
> > Subject: Convert Epoch Date to Serial Date
> >
> > I've looked thru the Octave time utilities and could not find a routine for this
> > purpose. Is there a simple function that receives the epoch-date and
> > converts it to a serial-date. (I need to feed the latter to the datetick 
> > routine)
> >
> > Thanks
> > Fritz
> I believe localtime will return a structure that you can pull apart and feed to 
> datenum to get a serial date:
>
> > > localtime(time())
> ans =
>
>    scalar structure containing the fields:
>
>      usec =  839628
>      sec =  31
>      min =  32
>      hour =  13
>      mday =  10
>      mon =  3
>      year =  119
>      wday =  3
>      yday =  99
>      isdst =  1
>      gmtoff = 0
>      zone = Central Daylight Time
>
>
> Tony Richardson