Nasdaq’s official website confirms that 23/5 trading will begin at 9 p.m. ET on Sunday, December 6, 2026: 5 days a week, 23 hours a day, from Sunday at 9 p.m. to Friday at 8 p.m., with only a 1-hour daily pause for maintenance from 8 to 9 p.m. #纳斯达克时间更改 #Nasdaq100
