Referencing Luke 17: 28-29. “Likewise even as it came to pass in the days of Lot; they ate, they drank, they bought, they sold, they planted, they builded; but in the day that Lot went out from Sodom it rained fire and brimstone from heaven, and destroyed them all”. Do you believe Jesus was saying that the Tribulation will start on the same 24-hour day that the Rapture takes place?
No, I think He was just stating an historical fact. If you’re referring to Daniel’s 70th Week, of which the Great Tribulation is the 2nd half, I believe it will begin shortly after the Rapture, but probably not on the same day. As far as I know the Bible doesn’t make a direct connection between the two events, except that one (the rapture) has to precede the other (Daniel’s70th week).