Marriage record doesn't have date of marriage

[LRChoquette]

Looking at the undated "Civil Marriages" source attached to G4TS-5NM Karl Alfred Sørensen, there's no date, not even just a year for the marriage. I could understand perhaps a missing birthdate for one or both parties getting married, or other missing tangential info, but did the original recordkeepers really create a record for a marriage without writing down its date? Even if it's an implied date because all the marriages on that day were entered one after the other in a big book? Is FamilySearch not even able to suggest a range of possible years for the marriage based on what page the original record is on?

[russellhltn]

Since this is an index, not the actual record, it may not be listed in chronological order. The date is probably recorded in the main record. But that's not what this source is.