How to determine pub date for web serials?

[idiffer]

How to determine publication dates of a web series if chapters have been published for several years straight?
I didn't find it in the manual.
Is it like in Worm? First chapter - orig pub date, and last chapter - ed pub date.

[rivka, Librarian Moderator]

No, the date of which it was completed would be the publication date, both original and edition. Unless there was a later edition, often in a different format, which would have a different edition date.