Taxacom: Dates of e-pubs ahead of print?

[Fet, Victor]

A general question to whom it may concern:

What is the official date of publication for a taxon name that is published in a 'e-pub ahead of print' but the journal has a print version (which will come later in time) and so does not feel obliged, and does not require the authors, to publish a Zoobank link?

Thank you,

Victor Fet
Marshall University