Tag Archives: Create datetime stamp with batch in the format YYYY-MM-DD

How to create a datetime stamp within a batch script in the format YYYY-MM-DD

Below is a batch script that populates the variable Timestamp with a datetime value in the format YYYY-MM-DD_HH:MM:SS.

This technique can then be used when creating files etc.

To try out the example below copy the text and paste it into a text editor like notepad. Save the file as timestamp with the extension .bat and then double click on the filestamp.bat file.

This code example will display the current datetime in windows command shell. It will also create a blank file called Test along with the current datetime in the format yyyymmddhhmmss in the same directory the batch script is run from.

@ECHO off
CLS
ECHO Date format = %date%

REM Breaking down the format 
FOR /f "tokens=2 delims==" %%G in ('wmic os get localdatetime /value') do set datetime=%%G
ECHO dd = %datetime:~6,2%
ECHO mth = %datetime:~4,2% 
ECHO yyyy = %datetime:~0,4%
ECHO/
ECHO Time format = %time%
ECHO hh = %time:~0,2%
ECHO mm = %time:~3,2%
ECHO ss = %time:~6,2%
ECHO/

REM Variable format 1
SET Timestamp=%date:~6,8%-%date:~3,2%-%date:~0,2%_%time:~0,2%:%time:~3,2%:%time:~6,2%
ECHO New Format 1: %Timestamp%
ECHO/
REM Variable Format 2
SET Timestamp=%date:~6,8%%date:~3,2%%date:~0,2%%time:~0,2%%time:~3,2%%time:~6,2%
ECHO New Format 2: %Timestamp%
ECHO/
REM Building a timestamp from variables
SET "dd=%datetime:~6,2%"
SET "mth=%datetime:~4,2%"
SET "yyyy=%datetime:~0,4%"
SET "Date=%yyyy%%mth%%dd%"
ECHO Built Date from variables: %Date%
ECHO/

REM Write Timestamp into file name
REM BREAK>Test%Timestamp%.txt 
PAUSE