WordPress Speed Up Service | WordPress Website Maintenance Packages Reply To: Where (what PHP page) to tweak post date setting?, by DougJoseph Michael: Thanks. You’re a kind soul. For the sake of helping, assume a standard WP theme like TwentySeventeen. So whenever a page (category, archive, etc) calls a function to invoke post date, where is the code of that function normally stored? Reply To: Where (what PHP page) to tweak post date setting?