Date Format Specification

While specifying the format for dates you can use any character from the following list:

%y - the year as a two-digit number ( 00 to 99 );
%Y - the year as a four-digit number ( 1900-9999 );
%m - the month as a number with a leading zero ( 01 to 12 );
%n - the month as a number without a leading zero ( 1 to 12 );
%M - the month as an abbreviation ( Jan to Dec );
%F - the month as a full name ( January to December );
%W - the ISO-8601 week number of the year. Weeks start on Monday;
%w - the week number, weeks start either on Monday or on Sunday depending on the value of the start_on_monday config property
%d - the day as a number with a leading zero ( 01 to 31 );
%j - the day as a number without a leading zero ( 1 to 31 );
%D - the day as an abbreviation ( Sun to Sat );
%l - the day as a full name ( Sunday to Saturday );
%h - the hour based on the 12-hour clock ( 00 to 11 );
%H - the hour based on the 24-hour clock ( 00 to 23 );
%g - the hour based on the 12-hour clock without a leading zero ( 1 to 12 );
%G - the hour based on the 24-hour clock without a leading zero ( 0 to 23 );
%i - the minute as a number with a leading zero ( 00 to 59 );
%s - the second as a number with a leading zero ( 00 to 59 );
%a - displays am (for times from midnight until noon) and pm (for times from noon until midnight);
%A - displays AM (for times from midnight until noon) and PM (for times from noon until midnight).

For example, if you want to present 1st June 2019 as 01/06/2019, you should specify "%d/%m/%Y".