Magento 2 getting invalid date format error

Magento is a ready to use e-commerce platform built on open source technology PHP which has all major in-built functionality for online store such as product catalog, cart, coupon, cms pages, user registration and login and payment gateway etc. Magento is one of the most favorite e-commerce platform on internet.

No doubts it’s best platform but some time you get annoying error which just come you don’t have any idea how it’s came , what i did wrong?
A same type of experience i also get during working on it, may be you also get the same error that’s why you are here 🙂
I get “invalid date format error” while adding or editing products.(I am using Magento 2.3.4)

See the below image of error what i get –

Codereplica - Magento 2 Invalid Date Format Error

Let’s see how we can resolve it –

First you have to directory/folder/file access permission.
Go to “magento” root folder .
Go to “vendor/magento/framework/Stdlib/DateTime/Timezone.php“.

Find the “appendTimeIfNeeded” method –

private function appendTimeIfNeeded($date, $includeTime)
     {
         if ($includeTime && !preg_match('/\d{1}:\d{2}/', $date)) {
             $date .= " 0:00am";
         }
         return $date;
     }

Under “appendTimeIfNeeded” method you can see there is a “$date” variable having value “0:00am“.
Just replace the “$date” value with “0:00“.

See below is the update code –

private function appendTimeIfNeeded($date, $includeTime)
     {
         if ($includeTime && !preg_match('/\d{1}:\d{2}/', $date)) {
             $date .= " 0:00";
         }
         return $date;
     }

Note : Please take a backup of this file before replacing and updating.

Hope this solution solved your problem.