Wrong.WOTC is not magic like what we see on Bugs Bunny,Lost in time demo.WOTC would make it so that a bunch of different "eras" were like different countries on a planet which means that in space you would be able to see each Era and not just the Trabia +Balamb era.
It´s an optical illusion created by an holographical dome over each era (which happens to be the same just with different side shapes).The time travelling vehicles make it look like the pictures were real because they time travel when they pass the boundaries limited by the walls.It then creates the continuum illusion.
The rockets on the Lunar gate were also time travelling vehicles.
They time travel as soon as they pass over the dome.
But on Space they see it from above.They travelled to T+B era and they see the dome (which works like a simple glass now).
The eras weren´t glued on a continuum.This is an illusion created by the walls which leads to the creation of flawed atlas on FF8.Hyne planned it carefully.
They saw the Galbadia era and the T+B era on space at the same time due to a complex hol. system.Also since the Ragnaroks could travel through space freely how did the people that went into space on them know how to get back to Earth if the Earth looked like the moon. Also when they are in space wouldnt it look funny if there were 2 moons and no Earth?
I don´t know how it works and I am in the process of researching it.(I admit my ignorance).
But calm down.
One has yet to explain how the monsters are seen on the game falling on Galbadia with Esthar on the other side of the planet (or not because we only see one era).
Judging from the duration of the space events I say it takes much less than 12 hours(the time needed for Esthar to be seen from this side).