MATLAB: Change julian date to format time

convert julian date

How i can convert Julian date to formatOut = 'mmmm/dd/yyyy hh:mm:ss';

(719801.916666667) (719801.958333333) (719802)

Best Answer

I believe those are actually MATLAB datenum numbers. The years do not make sense using 'juliandate' or 'excel' with 'ConvertFrom'.

Try this:

dv = [719801.916666667
               719801.958333333
               719802];
dta = datetime(dv, 'ConvertFrom','datenum', 'Format','MMMM/dd/yyyy hh:MM:ss')

producing:

dta = 
    3×1 datetime array
     September/30/1970 10:09:00
     September/30/1970 10:09:59
     October/01/1970 12:10:00

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t = datetime(DateStrings,'InputFormat','dd/MM/yyyy');

MATLAB: Converting numeric elements to date

Depending what operations you need to perform, you may be able to keep your data as a datetime array without converting it to serial date numbers. But if you do, datetime can convert serial date numbers into a datetime array.

>> dt = datetime('now')
dt = 
  datetime
   30-Sep-2020 09:48:21
>> sdn = datenum(dt)
sdn =
   7.3806e+05
>> dt2 = datetime(sdn, 'ConvertFrom', 'datenum')
dt2 = 
  datetime
   30-Sep-2020 09:48:21

As an example of some operations defined on datetime arrays, you can perform date and time arithmetic using datetime and duration arrays.

>> dt3 = dt + hours(1) + minutes(2) + seconds(3) % datetime + duration = datetime
dt3 = 
  datetime
   30-Sep-2020 10:50:24
   
>> du = dt3 - dt2 % datetime - datetime = duration
du = 
  duration
   01:02:03

Best Answer

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