This song was adopted as the national anthem on May NUMBER@1 , NUMBER@2 , three years after the `` May Revolution '' -LRB- Revolución de Mayo -RRB- ; May NUMBER@1 is therefore MISC@1 Day in LOCATION@1 .

This song was adopted as the national anthem on May NUMBER@1 , NUMBER@2 , three years before the formal declaration of independence from LOCATION@2 . May NUMBER@1 is therefore MISC@1 Day in LOCATION@1 .
