It's going to be a lot less than 24ms though because that's the antipode which is worst case for a around-the-globe signal. However, the antipode for probably every single stock market is likely somewhere uninhabited. It's still going to be a huge improvement of course but I'm sure there's encode/decode times to convert to/from an electrical signal. And presumably the 0.1 bps probably means it also takes a long time to receive a single packet (error correction & collecting enough signal in the first place). So we're probably a long ways away from it making sense for that use case.
The cord connecting Europe to Australia is almost exactly through the centre of the planet.
Also, the latency difference is a lot higher than 24ms because the current best route is via a circuitous fibre link. Light is slowed down in the glass of the fibre significantly (about 30 to 40%).
Selling picture view windows that sat out in the scenery of Yellowstone for a few years and nano-glass-dust total surveillance are just a few of the exciting possibilities.
Aren't satellite-satellite laser links the new standard for latency-sensitive communication since it's point to point and avoids delays from refraction?
I'm not sure if they have true global connectivity yet, but. . . I'm sure SpaceX is working on it.
1 ms would still be a big deal in HFT. The low bitrate pretty much kills it though (and yes, probably whatever lengthy processing is required to get a signal out of the particle soup).
