日付から日付を引く(日付の差分) # 2019/12/31 から 2020/01/01 の期間(1日前)PSC:\Users\hidehiko>$DATE.Subtract([Datetime]"2020/01/01")Days:-1Hours:0Minutes:0Seconds:0Milliseconds:0Ticks:-864000000000TotalDays:-1TotalHours:-24TotalMinutes:-1440TotalSeconds:-86400TotalMilliseconds:-86400000 ...