Magento 2.1.1
Find any date field in Magento, e.g. customer edit form Date of Birth, and choose a date.
The date is in the current user's locale's standard date format.
The date is in the format mm/dd/yyyy.
I'm also experiencing this issue, the date format should be dd/mm/yyyy for UK stores. Even when i set the date format in Configuration > Catalog > Catalog > Date & Time Custom Options, and set the default country to UK, if i try and set the dob field against a customer to the 10th April i.e. 10/04/1991, the datepicker selects october as the month and the 4th as the day,

if i go ahead and save the date in the above format, the grid shows Apr 10, 1991 (which is correct), but then when i edit this customer again, the date is loaded in as 04/10/1991.

There is also an issue when importing customers with the uk date format,
i.e. customer with dob 12/02/1941 will be imported with a dob of Dec 2, 1941 which is wrong, the import process also assumes the US date format.
Hi,
Can anyone provide an update on this, i see it's been marked as a bug. Is this a known issue?
Regards,
Sophie
internal jira ticket has been created -MAGETWO-59937
I have a similar issue I described here #5943 , still waiting for resolution. The newsletter queue time does not reflect my local time. I tried the commits referenced, but it does not solve my issue.
@JacobDrummond we'd like to avoid modifying the core code files if possible. Any ideas when this fix will be part of an official release?
Internal ticket to track issue progress: MAGETWO-80096
Hi @qubaji the issue has been fixed in https://github.com/magento/magento2/pull/11067 by @joachimVT. The fix will be available in 2.2.1
Not fixed in 2.2.1. Very bad.

Hi @qubaji. Thank you for your report.
The issue has been fixed in magento-engcom/magento2ce#1353 by @magento-engcom-team in 2.3-develop branch
Related commit(s):
The fix will be available with the upcoming 2.3.0 release.
Most helpful comment
Hi,
Can anyone provide an update on this, i see it's been marked as a bug. Is this a known issue?
Regards,
Sophie