I don't know if I would agree with six days, doesn't happen that fast for me usually. When the flower first opens the anthers are perpendicular to the longitudinal axis of the pistil. As the anthers ripen they move down and become more parallel to the pistil.
Anther color change also occurs at this time. I usually look for a nice bright yellow with just a hint of green where the anther connects to the filament.
2 days after previous pic: anthlers dropped and ready for harvest
Aaaaand, its gone:
And yes, i also managed to extract the pollen (using the tuningfork method)
Notice that the anthers were turning a darker yellow even while still perpendicular. This is not really the norm and may indicate that the pollination was successful. Typically they don't "age" that fast otherwise.
Normally they don't get that color until after the filaments/anthers have moved down.
The ripening of the pod is a quick process once it begins. Sometimes if the humidity levels are excessive, they may need help in opening. Patience is required though, too soon and the seed casings are not hardened and damage is easy. Natural birth is better than a C section LOL