Traits.SetCreatedAt converts time.Time to Unix timestamp

[Noah-Codex]

Before

When uploading a time.Time value to the reserved createdAt attribute, the API succeeds with status 200 OK, but displays an Invalid Date when viewing the People tab in Journeys.

In fact, attempting to Round or Truncate the time.Time in any fashion has the same results.

After

I then noticed that a default segment documents created_at to expect a UNIX timestamp.

When instead manually setting the createdAt as shown below, I instead got the desired result.

identify := analytics.Identify{
	Traits: analytics.NewTraits().
		Set("createdAt", time.Now().Unix()),
	UserId: userID,
}

Result