What does the cryptic crossword clue "Rule evil jibes wrong for major landmark event (6,7)" mean?

The wordplay uses an anagram. anagram of RULE + EVIL + JIBES = SILVERJUBILEE The answer is SILVERJUBILEE.

Rule evil jibes wrong for major landmark event (6,7)

Daily Mail Cryptic #17623 | 19 Across | 2025-05-21 flower