>>7736908Anon, they require context, which "March 29th" completely lacks. If you win a race, all you have to say is "I'm first", but that's also a cultural degradation, a simplification of what should actually be said: "I'm first place"
The only case where it would be linguistically correct to use ordinals without a preposition would be in the case that the context was already provided by an outside party, say:
>What place did you end up on?>I was first. (place)This situation is ONLY CORRECT because the context was already implicit by the question asked. In "March 29th", it's NOT implicit that it's referring to the day. This word placement would only be correct if "day" was also written in. This is not because ordinal numbers require a preposition, it's because they require a context. Either implicit or explicitly spoken.