On the Trinity Church's clock, the hands are set at 1:21. This is a reference to 2014's The Amazing Spider-Man 2 movie, when the clock tower's hands stopped spinning rapidly and position on 1:21, after Gwen Stacey died from a fall. This is also a reference to the story "The Night Gwen Stacy Died" appearing in the comic The Amazing Spider-Man issue #121.
Additionally, the colored green and purple windows matches the Green Goblin's costume.
Contributed by ProtoSnake