Crossword puzzle clue "arranged on order of occurrence"

Arranged on order of occurrence

Rare occurrence at the U.S. Open on Father's Day that's a common occurrence at the U.S. Open on Labor Day

Common deli order ... or a literal occurrence five times in this puzzle

Each circled pair is an abbreviation for one; all 13 are arranged in the roughly north-to-south order in which their representatives (except for John Hancock) signed the Declaration of Independence

Most perfectly arranged in exact order so don't touch anything

Arranged in regular order

Arranged in order

Unlucky occurrence