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How to Compare a Public Schedule to a Private Schedule

This comparison lets you validate a private SSIM file against the currently published public schedule — useful for checking what has changed before a new schedule goes live.

Before starting, you must have at least one private schedule file uploaded. See How to Manage Private Schedules for instructions.

List Available Private Schedules​

To see which private files are available for comparison:

List private schedules that are available for query.

This will return the dataset names you need to reference in your comparison prompt.

Compare a Public Schedule to a Private Schedule​

Reference the public schedule by airline and the private dataset by name. The example below compares the latest public schedule for Air New Zealand against a private SSIM file, listing any differences in aircraft type:

Compare the latest public schedule update for NZ with nz20260210 and show all differences in aircraft type. List flight number, previous aircraft type and latest aircraft type.

What You Can Compare​

You can use any SSIM field as the basis for your comparison. Common examples include:

  • Aircraft type
  • Departure and arrival times
  • Flight frequency
  • Terminal and gate
  • Codeshare details
  • Traffic restrictions

For a full list of available SSIM terms, see How to do a SSIM File Search.