Alright, let's lay out all the context
Before anything else, while Pitou's En normally extends 2 kilometers, during the Invasion their range is increased by the threat presented by Zeno's Dragon Dive.
Furthermore, we see Zeno and Netero surfing and falling alongside the Dragon Dive at the same speed
The moment the Dragon Rain breaks apart into numerous seperate Dragons is the same moment the Palace Invasion begins for Gon and friends.
This same moment in time, Pitou leaps into the air and finds Netero falling with the Dragon as he's far more dangerous than the Dragon. Netero attacks Pitou while he himself is falling and sends Pitou flying. Concurrent with Pitou's flight of 500 meters outside the Palace walls, halting, and falling 100 additional meters, 0.96 seconds have passed and the first of Zeno's dragon's have reached the ground (notice the ones closest to the exterior wall, quite a few have hit the ground). 0.96 seconds was how the last chapter ended, but we're given the recap in the next one as I already linked, with the Palace Invasion Squad not having moved much from where they all were at 0.96 seconds, making any perceived difference in time negligible). After having fallen some more/time passing (Pitou had to have fallen some more, notice how the Dragons that had impacted the ground towards the exterior wall have long since fully traveled into the ground and a fuckton of dust from the Dragons pulverzing parts of the palace has been kicked up), Pitou activates their En, falls to the ground from the remaining distance they need to travel, and leaps to where Meruem's location is in the Palace. The time of 3.01 seconds occurs before Pitou activates their En. Its at 3.28 seconds that Youpi smashes the staircase as its noted to have occurred concurrent to Pitou reaching Meruem.
So?
Basically, I'll be getting a speed for the Dragon Dive, Netero's Attack, and Pitou's combined En and Jump speed.
Now the scaling
Palace Size can be found here
Palace (Red Line) = 532 pixels
Small Dome Diameter (Light Green Line) = 23 pixels
Large Dome Diameter (Light Blue) = 81 pixels
500 meters (Green Line) = 184 pixels (I was able to use a ratio between the palace size in meters and the stated 500 meters to figure out where Pitou would be located relative to the Palace wall)
Distance Pitou Travels (Orange Line) = 335 pixels
Distance En Extended From Pitou (Blue Line) = 839 pixels
Small Dome Diameter/Palace = 0.0432
Large Dome Diameter/Palace = 0.152
Distance Pitou Travels/Palace = 0.629
Distance En Extended From Pitou/Palace = 1.577
Small Dome Diameter = 62.424 meters
Large Dome Diameter = 219.64 meters
Distance Pitou Travels = 908.905 meters
Distance En Extended From Pitou = 2,278.765 meters
The distance Pitou's En extends will be added to the distance Pitou's body needs to travel as both actions need to be accomplished in this time frame.
Total Distance Covered By Pitou's Actions = 3,187.67 meters
Time Frame (Low End) = 0.27 seconds
I could shave off some of the time assuming I could know how high Pitou was in the air and how fast they were falling, but I can't derive that with the data I have.
Pitou's Speed = 11,806 m/s or mach 34.694
Not bad.
Now the Dragon Dive and Netero
Tower Dome Diameter = Small Dome Diameter from before
Tower Dome Diameter = 60 pixels
Dragon Height Above Dome At Time 0 = 1946 pixels
Dragon Height Above Dome At Time 0/Tower Dome Diameter = 32.433
Dragon Height Above Dome At Time 0 = 2,024.598 meters
Now for the remainder (how high the dome extends into the air)
Palace = 2140 pixels
Remainder Height Above Ground = 223 pixels
Remainder Height Above Ground/Palace = 0.104
Remainder Height Above Ground = 150.28 meters
Total Dragon Drop Distance = 2,024.598 + 150.28 = 2,174.878 meters
Time Frame = ~0.96 seconds
Zeno's Dragon Speed = 2,265.498 m/s or mach 6.658
Eh, its mostly here for Netero's benefit anyway
Now, this all does indeed happen in less than 0.1 seconds
How much less though?
Well, Netero was falling as fast as the Dragon, you can even see that he's falling relative to the formation of his own attack
So that's fun
Right Most Panel
Netero = 298 pixels
Distance Above Attack = 794 pixels
Distance Above Attack/Netero = 2.664
Netero = 1.8 meters (his toes are pointed, accounting for it)
Distance Above Attack = 4.795 meters
Middle Panel
Honestly, I could have started with this panel, but I wanted to be sure and confirm it was a continuous drop that occurred for Netero rather than him randomly moving up
Netero = 295 pixels
Distance Above Attack = 713 pixels
Distance Above Attack/Netero = 2.417
Netero = 1.8 meters
Distance Above Attack = 4.351 meters
Left Page
Netero = 319 pixels
Distance Above Attack = 736 pixels
Attack Travel = 1589 pixels
Distance Above Attack/Netero = 2.307
Attack Travel/Netero = 4.981
Netero = 1.8 meters
Distance Above Attack = 4.153 meters
Total Fall Distance = 4.351 - 4.153 = 0.198 meters
Attack Travel = 8.966 meters
Speed of Netero's Free Fall = ~2,261 m/s
Time Frame = 0.0000876 seconds
Netero's Attack Speed = 102,352 m/s or mach 300.779
So that's a thing too
Applicability to fuckers like Meruem? Adult Gon?
Let's see
Meruem blocks it, if not getting physically overpowered by it, here and here
He's able to perceive Netero's hand motions, if barely.
Netero's only move faster than him is this hand movement here and here. If you have the 2nd image at its full size instead of fit to screen, you'll notice he got his arms up in time to block Ichi no Te from point blank range
Another example of blocking here
And outright seems to dodge the Ichi no Te here
And we already know Adult Gon is Pre-Rose Meruem's peer from Pitou's evaluations (actually, pretty easy to determine by comparing Adult Gon's kick, let alone his Jajanken, to Meruem's intention to decapitate Pitou)
Before anything else, while Pitou's En normally extends 2 kilometers, during the Invasion their range is increased by the threat presented by Zeno's Dragon Dive.
Furthermore, we see Zeno and Netero surfing and falling alongside the Dragon Dive at the same speed
The moment the Dragon Rain breaks apart into numerous seperate Dragons is the same moment the Palace Invasion begins for Gon and friends.
This same moment in time, Pitou leaps into the air and finds Netero falling with the Dragon as he's far more dangerous than the Dragon. Netero attacks Pitou while he himself is falling and sends Pitou flying. Concurrent with Pitou's flight of 500 meters outside the Palace walls, halting, and falling 100 additional meters, 0.96 seconds have passed and the first of Zeno's dragon's have reached the ground (notice the ones closest to the exterior wall, quite a few have hit the ground). 0.96 seconds was how the last chapter ended, but we're given the recap in the next one as I already linked, with the Palace Invasion Squad not having moved much from where they all were at 0.96 seconds, making any perceived difference in time negligible). After having fallen some more/time passing (Pitou had to have fallen some more, notice how the Dragons that had impacted the ground towards the exterior wall have long since fully traveled into the ground and a fuckton of dust from the Dragons pulverzing parts of the palace has been kicked up), Pitou activates their En, falls to the ground from the remaining distance they need to travel, and leaps to where Meruem's location is in the Palace. The time of 3.01 seconds occurs before Pitou activates their En. Its at 3.28 seconds that Youpi smashes the staircase as its noted to have occurred concurrent to Pitou reaching Meruem.
So?
Basically, I'll be getting a speed for the Dragon Dive, Netero's Attack, and Pitou's combined En and Jump speed.
Now the scaling
Palace Size can be found here
Palace (Red Line) = 532 pixels
Small Dome Diameter (Light Green Line) = 23 pixels
Large Dome Diameter (Light Blue) = 81 pixels
500 meters (Green Line) = 184 pixels (I was able to use a ratio between the palace size in meters and the stated 500 meters to figure out where Pitou would be located relative to the Palace wall)
Distance Pitou Travels (Orange Line) = 335 pixels
Distance En Extended From Pitou (Blue Line) = 839 pixels
Small Dome Diameter/Palace = 0.0432
Large Dome Diameter/Palace = 0.152
Distance Pitou Travels/Palace = 0.629
Distance En Extended From Pitou/Palace = 1.577
Small Dome Diameter = 62.424 meters
Large Dome Diameter = 219.64 meters
Distance Pitou Travels = 908.905 meters
Distance En Extended From Pitou = 2,278.765 meters
The distance Pitou's En extends will be added to the distance Pitou's body needs to travel as both actions need to be accomplished in this time frame.
Total Distance Covered By Pitou's Actions = 3,187.67 meters
Time Frame (Low End) = 0.27 seconds
I could shave off some of the time assuming I could know how high Pitou was in the air and how fast they were falling, but I can't derive that with the data I have.
Pitou's Speed = 11,806 m/s or mach 34.694
Not bad.
Now the Dragon Dive and Netero
Tower Dome Diameter = Small Dome Diameter from before
Tower Dome Diameter = 60 pixels
Dragon Height Above Dome At Time 0 = 1946 pixels
Dragon Height Above Dome At Time 0/Tower Dome Diameter = 32.433
Dragon Height Above Dome At Time 0 = 2,024.598 meters
Now for the remainder (how high the dome extends into the air)
Palace = 2140 pixels
Remainder Height Above Ground = 223 pixels
Remainder Height Above Ground/Palace = 0.104
Remainder Height Above Ground = 150.28 meters
Total Dragon Drop Distance = 2,024.598 + 150.28 = 2,174.878 meters
Time Frame = ~0.96 seconds
Zeno's Dragon Speed = 2,265.498 m/s or mach 6.658
Eh, its mostly here for Netero's benefit anyway
Now, this all does indeed happen in less than 0.1 seconds
How much less though?
Well, Netero was falling as fast as the Dragon, you can even see that he's falling relative to the formation of his own attack
So that's fun
Right Most Panel
Netero = 298 pixels
Distance Above Attack = 794 pixels
Distance Above Attack/Netero = 2.664
Netero = 1.8 meters (his toes are pointed, accounting for it)
Distance Above Attack = 4.795 meters
Middle Panel
Honestly, I could have started with this panel, but I wanted to be sure and confirm it was a continuous drop that occurred for Netero rather than him randomly moving up
Netero = 295 pixels
Distance Above Attack = 713 pixels
Distance Above Attack/Netero = 2.417
Netero = 1.8 meters
Distance Above Attack = 4.351 meters
Left Page
Netero = 319 pixels
Distance Above Attack = 736 pixels
Attack Travel = 1589 pixels
Distance Above Attack/Netero = 2.307
Attack Travel/Netero = 4.981
Netero = 1.8 meters
Distance Above Attack = 4.153 meters
Total Fall Distance = 4.351 - 4.153 = 0.198 meters
Attack Travel = 8.966 meters
Speed of Netero's Free Fall = ~2,261 m/s
Time Frame = 0.0000876 seconds
Netero's Attack Speed = 102,352 m/s or mach 300.779
So that's a thing too
Applicability to fuckers like Meruem? Adult Gon?
Let's see
Meruem blocks it, if not getting physically overpowered by it, here and here
He's able to perceive Netero's hand motions, if barely.
Netero's only move faster than him is this hand movement here and here. If you have the 2nd image at its full size instead of fit to screen, you'll notice he got his arms up in time to block Ichi no Te from point blank range
Another example of blocking here
And outright seems to dodge the Ichi no Te here
And we already know Adult Gon is Pre-Rose Meruem's peer from Pitou's evaluations (actually, pretty easy to determine by comparing Adult Gon's kick, let alone his Jajanken, to Meruem's intention to decapitate Pitou)
Final Tally
Pitou's Speed = 11,806 m/s
Zeno's Dragon Speed = 2,265.498 m/s
Netero's Attack Speed = 102,352 m/s