This function returns a timestamp equivalent of any given day plus an offset of n days. Weekends will not count as extra days so this function returns regular working days.
addDaysSkippingWeekends(timestamp, numberOfDays, timeZone)
TIMESTAMP equivalent of any given day plus an offset of n days where in a certain timezone weekends don't count.
addDaysSkippingWeekends(timestamp, sadasdsad, xxx)