IUPAC Green Book[3] in that, in terms of its definition [4], pH = âlg a. H. it involves a single ion quantity, the activity of the hydrogen ion, which is immeasurable by any ther-. modynamically valid method and requires a convention for its evaluation.
The series officially premiered on July 17, 1999. It has received worldwide critical acclaim since its premiere and gained enormous popularity by its second season. A feature film, The SpongeBob SquarePants Movie, was released in theaters on November 19, 2004, and a sequel was released on February 6, 2015.
Rating Newest Oldest. Best Answer: Spongebob made it's first air on May 1st, 1999. (what the first answerer said about the test run. This aired after the Kid's Choice Awards in 1999 to for the reasons they explained) It made it's official first air on July 17th, 1999. (this is when the show officially started to air regularly)