"Twelve Thirty" would also appear on the now-retitled fourth album, The Papas & The Mamas, when finally released in the spring of 1968.

[3] In a 1968 interview,[4] Phillips cited this arrangement as an example of "well-arranged two-part harmony moving in opposite directions".

"[5] Cash Box said that "a general aura of happiness...should give the public a feast on the new Mamas and Papas offering.

[7] In the song, the writer says he used to live in "dark and dirty" New York City, where a broken clock on a church steeple was stuck at 12:30.

[10][11] The song is featured in Drew Goddard's 2018 film Bad Times at the El Royale.