"最晚8点"在英语中可以用"no later than 8:00"来表示。

"No later than"是一个固定短语,意思是"不迟于",常用来表示事情必须在某一时间之前完成。

例句:

Please submit your report no later than Friday. (请在周五之前提交您的报告。)
The project must be completed no later than December 31. (该项目必须在12月31日之前完成。)
The package must be shipped no later than Wednesday. (必须在周三之前发送包裹。)