Time flow in the Main World and the Real World maintains a 1:1 ratio when no events intervene.
After calculating the Time, Hawkeye left the Main World and returned to Room 306 of the Hotel, ensuring to leave at 9 am to prevent any timing discrepancies from arising before daylight.
In Room 306, a blood-red Whirlpool gradually appeared and then disappeared. After it vanished, Hawkeye stood on the clean floor. He looked around and noticed that the items In the room hadn't been used. Just as he was about to slide his phone into his pocket, a detail caught his attention.
The first drawer of the bedside table had been pulled open slightly. Most people would subconsciously think they hadn't closed it properly, or assume that the last guest in Room 306 had left it open, but Hawkeye wouldn't think that way.