What's the noun for datedness? Here's the word you're looking for.
date
The addition to a writing, inscription, coin, etc., which specifies the time (especially the day, month, and year) when the writing or inscription was given, executed, or made.
A specific day in time at which a transaction or event takes place, or is appointed to take place; a given point of time
A point in time
(rare) Assigned end; conclusion.
(obsolete) Given or assigned length of life; duration.
A pre-arranged meeting.
One's companion for social activities or occasions.
“What was the date that you first provided any service for Mr. Smith with regard to the management of this building?”
“The gunports in the south and east walls of the structure adjoining the later gatehouse suggest a late fifteenth-century date.”
“In view of the information received as to the date during which my tenancy lasted, I must have moved into the house a little earlier than the date just read.”
dating
A form of romanticcourtship typically between two individuals with the aim of assessing the other's suitability as a partner in an intimate relationship or as a spouse.
“What was the date that you first provided any service for Mr. Smith with regard to the management of this building?”
“The gunports in the south and east walls of the structure adjoining the later gatehouse suggest a late fifteenth-century date.”
“In view of the information received as to the date during which my tenancy lasted, I must have moved into the house a little earlier than the date just read.”
