def timechecker(pickuptime, firstdeliverytime, SLA):

    # Find the number of nonworking days
    
    secondsinaday = 60 * 60 * 24
    pickuptime_obj, firstdeliverytime_obj = time.localtime(pickuptime), time.localtime(firstdeliverytime)
    pickuptime_seconds, firstdeliverytime_seconds, SLA_seconds = time.mktime(pickuptime_obj), time.mktime(firstdeliverytime_obj), SLA * secondsinaday
    publicholiday_mon_day = [ [3,25],[3,30],[3,31] ]

    totalnonworkingdays = 0
    day_in_seconds = pickuptime_seconds
    day = pickuptime_obj
    
    while day_in_seconds < firstdeliverytime_seconds:
        day = time.localtime(day_in_seconds)
        if ([day.tm_mon,day.tm_mday] in publicholiday_mon_day) or (day.tm_wday == 6):
            totalnonworkingdays += 1
        day_in_seconds += secondsinaday
        
    timetakeninworkingdays_seconds = firstdeliverytime_seconds - ( totalnonworkingdays * secondsinaday )

    if (timetakeninworkingdays_seconds - pickuptime_seconds) > SLA_seconds:
        return True
    return False
#TEST
#print(timechecker(1583137548, 1583412300, 5))