Checlist says that date "must be obtained by any means possible, including meta tags, etc. " So I think there's no other way, we have to get it from amp also.
Log in here to create Instant View templates. Please enter your phone number in the international format and we will send a confirmation message to your account via Telegram.
we shouldn't show date at all because it is sometimes published date and sometimes modified date.
Here, meta date is published one, but original page shows one year ago, which is modified date in ld+json script.
See how it works for different pages on this site:
http://ofeminin.surge.sh/dates.htm
Checlist says that date "must be obtained by any means possible, including meta tags, etc. " So I think there's no other way, we have to get it from amp also.