As you all know, the first 2 seasons of glitchtale take place in 2276, wait, why doesn’t the city look futuristic, it looks more like something we’d see today. Chara fell into the underground in 2015, so what is really going on. There is only one answer, they have a different calander system from earth.
Idea 1: Glitchtale World’s calandar systems 0 year started 261 years before earth’s. 2276 = 2015, 2015 = 1754, 1276 (prequel year) = 1015
Idea 2: Glitchtale World’s time it takes to orbit it’s star is different. I did some math based on the fact that inundertale, frisk fell 100 years after chara and it this is true, it takes 139.84 days for the glitchtale world to orbit its star. 2276=2015. This would also mean that the star’s habitable zone is smaller than the sun, so it may as well be smaller than the sun, a plausible star type would be a type K star (sun is a type G star)