Flight Schedule Changes

Hello,

I was wondering how often does FlightAware update their schedule data.
I have been pulling data for a particular flight in FlightAware (Flight ETD873 in particular) and October 31st their schedule changes from 12:15 AM to 11:55 PM (A difference of 20 minutes)

The airline site information and other sites like kayak, orbitz, etc also reflects the same changes however, I’m not getting those changes from flightAware.
If anyone can clarify why this is happening, I’d appreciate any help. Thank you.

Here is the data I get from flightAware
{
“AirlineFlightSchedulesResult”:
{
“next_offset”: -1
“data”:

8]
0:
{
“ident”: “ETD873”
“actual_ident”: “”
“departuretime”: 1478186100
“arrivaltime”: 1478224200
“origin”: “RKSI”
“destination”: “OMAA”
“aircrafttype”: “A346”
“meal_service”: “First: Meal / Business: Meal / Economy: Meal”
“seats_cabin_first”: 12
“seats_cabin_business”: 32
“seats_cabin_coach”: 248
}

1:
{
“ident”: “NLY4015”
“actual_ident”: “ETD873”
“departuretime”: 1478186100
“arrivaltime”: 1478224200
“origin”: “RKSI”
“destination”: “OMAA”
“aircrafttype”: “A346”
“meal_service”: “”
“seats_cabin_first”: 12
“seats_cabin_business”: 32
“seats_cabin_coach”: 248
}

2:
{
“ident”: “KAL7901”
“actual_ident”: “ETD873”
“departuretime”: 1478186100
“arrivaltime”: 1478224200
“origin”: “RKSI”
“destination”: “OMAA”
“aircrafttype”: “A346”
“meal_service”: “First: Meal / Business: Meal / Economy: Meal”
“seats_cabin_first”: 12
“seats_cabin_business”: 32
“seats_cabin_coach”: 248
}

3:
{
“ident”: “AAR6971”
“actual_ident”: “ETD873”
“departuretime”: 1478186100
“arrivaltime”: 1478224200
“origin”: “RKSI”
“destination”: “OMAA”
“aircrafttype”: “A346”
“meal_service”: “First: Meal / Business: Meal / Economy: Meal”
“seats_cabin_first”: 12
“seats_cabin_business”: 32
“seats_cabin_coach”: 248
}

4:
{
“ident”: “SEY5377”
“actual_ident”: “ETD873”
“departuretime”: 1478186100
“arrivaltime”: 1478224200
“origin”: “RKSI”
“destination”: “OMAA”
“aircrafttype”: “A346”
“meal_service”: “First: Meal / Business: Meal / Economy: Meal”
“seats_cabin_first”: 12
“seats_cabin_business”: 32
“seats_cabin_coach”: 248
}

5:
{
“ident”: “AZA5689”
“actual_ident”: “ETD873”
“departuretime”: 1478186100
“arrivaltime”: 1478224200
“origin”: “RKSI”
“destination”: “OMAA”
“aircrafttype”: “A346”
“meal_service”: “”
“seats_cabin_first”: 12
“seats_cabin_business”: 32
“seats_cabin_coach”: 248
}

6:
{
“ident”: “ASL8615”
“actual_ident”: “ETD873”
“departuretime”: 1478186100
“arrivaltime”: 1478224200
“origin”: “RKSI”
“destination”: “OMAA”
“aircrafttype”: “A346”
“meal_service”: “”
“seats_cabin_first”: 12
“seats_cabin_business”: 32
“seats_cabin_coach”: 248
}

7:
{
“ident”: “BER4015”
“actual_ident”: “ETD873”
“departuretime”: 1478186100
“arrivaltime”: 1478224200
“origin”: “RKSI”
“destination”: “OMAA”
“aircrafttype”: “A346”
“meal_service”: “”
“seats_cabin_first”: 12
“seats_cabin_business”: 32
“seats_cabin_coach”: 248
}

}

}
}

Flight Schedules are updated once per month, usually on the Friday of the first full week of each month.

If you want the latest flight status, you need to use FlightInfoEx rather than AirlineFlightSchedules, however that will only work when a flight is within about 48 hours or less until departure.