Wiktionary
phr. 1 (context idiomatic English) The first occurrence of an event that is scheduled or hoped to become annual. 2 (context somewhat rare English) The second occurrence of an annual event, that is, the first occurrence that is indeed annual.
Usage examples of "first annual".
Secondly, he would in fact start work on his first annual Game soon, and he would call in Tegularius to be his foremost assistant in this work.
BioWeb was trying for a more Halloweeny theme, kicking off their first annual blood drive utilizing the image of the ultimate blood donee.
Despite a recent public break-up with his son over issues raised by the controversial first annual conference of the Without Borders Initiative, Sir Horatio told the press: 'Sebastian is a clean living, decent young man.
I'll have you know that this is the first annual meeting of a very important new bestiary interest group!