MSN: Cristiano Ronaldo Becomes Football's 1st Billionaire; Here Are the Top 10 Richest Footballers Cristiano Ronaldo Becomes Football's 1st Billionaire; Here Are the Top 10 Richest Footballers When is it proper to use 1st instead of first? For example, is the correct sentence acceptable? Can you give more detail about why you 1st got involved?

Understanding the Context

I tried finding some authoritative source... abbreviations - When is it proper to abbreviate first to 1st? - English ... I'm wondering which is the right usage between "the 1st" and "1st" in these sentences: a) The United States ranked 1st in Bloomberg's Global Innovation Index.

Key Insights

b) The United States ranked the 1st... Is it correct to say -1th or -1st? - English Language & Usage Stack ... When were numeric contractions for ordinals first used, as in 1st, 2nd, 3rd, 6th instead of first, second, third, sixth? 1st hour, 2nd hour, 3rd hour...

Final Thoughts

But how to say "zero"-th hour?