Anville Turntable

[Pikayune5]

In B2/W2 the Rail Enthusiast medal can only be obtained after seeing every train on the Anville Town Turntable. The problem is, one train, the "Future Train," is rather elusive. The turntable typically displays the trains in the following order:

• Hyperspeed Train
• Wi-Fi Train
• Old Train
• Single Train
• Double Train
• Multi Train
• Super Double Train
• Super Single Train
• Super Multi Train
• Anville Train

Only on rare occasions does the Future Train appear. One of those days just so happens to be today, October 1st, 2019. I've been looking to see if there is a guide to determine when the Future Train appears. I found a couple of GameFAQs threads mentioning different days--though neither mentions October 1st. Is there someway to look at the game's code to find how the Anville Town Turntable determines what train appears?