Adopted doctrine

Defined term

Effective On

A calendar date describing when a business fact applies when time-of-day has no useful meaning.

Reviewed: July 2026
Current state: Calendar-date semantics are implemented for client relationship history and effective-dated records.

Owning boundary: Applicable canonical module
Not equivalent to: Effective At · Created At
Verified identifiers: relationshipStartedOn · effectiveFrom

Effective On is a calendar date for facts where time-of-day has no useful business meaning, such as when the agency relationship with a client began.