备份
本周的周一
=DateAdd(“d”, -(WeekDay(Today(),FirstDayOfWeek.Monday))+1, Today())
下周的周一
=DateAdd(“d”, 7-(WeekDay(Today(),FirstDayOfWeek.Monday)), Today())
下下周的周一的12am前1秒
=DateAdd(“s”, -1,DateAdd(“d”, 15-(WeekDay(Today(),FirstDayOfWeek.Monday)), Today()))
今年上一个月的?号
=DateAdd(“m”, -1,DateSerial(YEAR(TODAY), MONTH(TODAY), ?))