No.

The ‘datePublished’ property applies to a broad range of publication types, most of which will have a publication date, but not a specific publication time (newspapers, books, journal articles, etc).

The only publication types with publication times are online news articles, blog posts, tweets, etc. The ‘createdAt’ property expects a DateTime datatype, and is probably more reflective of what you mean here.

But in any case, both the Date and DateTime datatypes are ISO8601 so you can include a time with a date if you want, but to require a publication time for this property would cause lots of problems.

https://en.m.wikipedia.org/wiki/ISO_8601

DateTime != Date therefore the two specifications are contradictory.

Recommend the expansion of the rangeIncludes of datePublished to include DateTime.

This would reflect the need for some more accurate information about when a CreativeWork is published.

Implemented in PR #2380