if(GetChurchMission(playerid) == 1) //The nextchurchmission from OnPlayerEnterMission
{
//code - nextchurchmission if needed
}
else if(GetChurchMission(playerid) == 2)
{
//mission ended - code
}

#define     JANUARY     1
#define     FEBRUARY    2
#define     MARCH       3
#define     APRIL       4
#define     MAY         5
#define     JUNE        6
#define     JULY        7
#define     AUGUST      8
#define     SEPTEMBER   9
#define     OCTOBER     10
#define     NOVEMBER    11
#define     DECEMBER    12

#define     MONDAY          0
#define     TUESDAY         1
#define     WEDNESDAY       2
#define     THURSDAY        3
#define     FRIDAY      4
#define     SATURDAY        5
#define     SUNDAY      6

native GetMonthName(month); //number of month OR the NAME of the month in CAPITAL LETTERS
native GetDayName(day); // NUMBER of DAY or name of DAY in CAPITAL letters [0 TO 6]
native GetCurrentMonth(); // returns the current month
native GetCurrentDay(); // returns the current DATE
native IsLeapYear(year); // returns if the INPUT YEAR is a LEAP YEAR
native GetMonthDays(month); // RETURNS THE NUMBER OF DAYS OF THE INPUT MONTH
native GetDay(date, month, year); // returns the >> DAY << (NOT DATE)

main()
{
    printf("%s", GetDayName(GetDay(15, JULY, 2013)) );
}