It is at the 4th Hour 20 Minutes and 24 Seconds that the brightest star in Perseus shines upon the Celestial Sphere at 4:20 and 24 seconds.
Funny thing about Perseus is that he carries the head of a Gorgon who could turn people to stone. Coincidentally Perseus is the only Milky Way Constellation to cross the Milky Way at the 4th Hour and 20th Minute, aka 4:20, but in this case its 4:20:24.
4:20:24 is the Right Ascension of the Star, while 34 Degrees 34 Minutes and 00 Seconds are its positive, northerly Declination. See the chart below to make sense of this flag.
Note legend has it if you look at the severed head of the Gorgon Medusa you will turn to stone.