How to change date and time format on Marshmallow? I'm using a Nexus 5X with Android 6.0.1, patch level January 2016. I'd like to change the system language to English but like to keep my local date format. In versions prior to Marshmallow, there was an option to set the date format, but I can find it anymore...

How do I set the UI language to English and the date format to DD.MM.YYYY or YYYY-MM-DD?
In Android Marshmallow you don't seem to be able to change the date format. Instead it chooses automatically what's appropriate for your locale.

In your case, you seem to want the English (UK) variant and not the English (US) one. So go to language settings and change it. Any other English variant should work since I'm pretty sure only americans use the MM/DD/YYYY variant.