Historical clue formulations

• Big Apple cathedral — 2025-12-06
• Green day, familiarly? — 2025-04-29
• Cathedral in N.Y.C. — 2020-07-19
• Tourist attraction on N.Y.C.'s Fifth Ave. — 2016-04-10
• Green day? — 2016-03-20
• Cathedral facing New York's Rock Center — 2012-06-28