Input type DateTime - Value format?

Question

In which format should I put the date and time, for use in the HTML5 input element with datetime type?

I have tried:

• 1338575502

Answer 1

For what it's worth, with iOS7 dropping support for datetime you need to use datetime-local which doesn't accept timezone portion (which makes sense).

Doesn't work (iOS anyway):

Works:

PHP for value (windows safe):

strftime('%Y-%m-%dT%H:%M:%S', strtotime($my_datetime_input))