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readtable is not reading the time 12:00:00 AM?

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Abhinav
Abhinav on 17 Feb 2020
Answered: Motasem Mustafa on 1 Sep 2021 at 13:55
I am using 'readtable' to read an excel file. The first column of the file contains date and time in 'mm/dd/yyyy HH:MM:SS PM' format. The probelm is the following:
The readtable skips the time if the entry is '5/7/2018 12:00:00 AM'. I want to read entire date-time string. is it possibel to do it using the readtable?
I am using the following code to invoke the readtable:
filename=fullfile(direc,station_name);
T=readtable(filename);
Note: the readtable is able to read other time-entries perfectly; the above time-entry is 1427th row in the file, including header.
  11 Comments
Star Strider
Star Strider on 18 Feb 2020
Noted. Apparently the MATLAB application was adding the AM/PM designations, since they do not appear in the Excel file, at least that I can see.

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Answers (4)

Walter Roberson
Walter Roberson on 17 Feb 2020
Your input format specification should be 'MM/dd/yyyy hh:mm:ss a' to read that.
m is minutes not month
H is only for 24 hour clock
M is for month not minutes
S is for fractions of a second
PM is the wrong specifier for AM/PM
  3 Comments
Abhinav
Abhinav on 17 Feb 2020
I have attached the sample file now, along with the code lines.

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Motasem Mustafa
Motasem Mustafa on 19 Oct 2020
I have the same issue.
I have a data from a datalogger and when I am using a code to separate the year,month,day, and time from the data, it gives me an error. When I skip the row of the time 00:00:00, the code works.
When openeing the workspapce it shows that 00:00:00 is empty as shown in the screenshot below.
I am still struggling with the code and did not solve it.
  1 Comment
Mohd Khairi Mohd Zambri
Mohd Khairi Mohd Zambri on 1 Sep 2021 at 11:35
I have the same problem with the first row, but if the first row is not 12:00:00 AM then it does not have any problem. Can anyone help?

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Yutaka Yamada
Yutaka Yamada on 24 May 2021
Edited: Yutaka Yamada on 24 May 2021
Hi,
Recentely I've tried similar thing.
Please try below code.
opts = detectImportOptions('readTime.xlsx');
opts.VariableTypes = 'datetime';
opts.VariableOptions.DatetimeFormat = 'mm/dd/yyyy HH:mm:ss a';
T = readtable('readTime.xlsx', opts);
I've attached the Excel file that I've used for the test.

Motasem Mustafa
Motasem Mustafa on 1 Sep 2021 at 13:55
Assalm Alykom Mohammad Khairi,
Kindly find the below code that worked for me last year and kindly find the linke to the answer.
Bel tawfeeq
All the best,
Motasem
The new code that worked .
Thanks @ Walter Roberson
clc,clear,close all;
data = readtable('Book_new.xlsx','Range','A1:A60','ReadVariableNames',false);
A = table2array(data);
yy=datestr(datenum(A),'yyyy');
mm=datestr(datenum(A),'mm');
dd=datestr(datenum(A),'dd');
time=datestr(datenum(A),'HH:MM:SS');
[status,message] =xlswrite('motasem.xlsx',str2num(yy),'sheet1','A1:A30');
[status,message] =xlswrite('motasem.xlsx',str2num(mm),'sheet1','B1:B30');
[status,message] =xlswrite('motasem.xlsx',str2num(dd),'sheet1','C1:C30');
[status,message] =xlswrite('motasem.xlsx',string(time),'sheet1','D1:D30');

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