We have Seconds,Minute,Hour,Day,Month,Year function. Will you try to use Week function if MetaTrader provide it?

[Biantoro Kunarto]

Both MT4 & MT5 have some function to calculate week. What do you mean with week function?

For MT4, you can use DayOfWeek() or TimeDayOfWeek() function

For MT5, you can use MqlDateTime structure. In this data structure, there is  day_of_week