{
  "Events": {
    "Bradley": {
      "AnnounceNext": false,
      "Enabled": true,
      "MaximumTimeBetween": 45,
      "MinimumTimeBetween": 30,
      "NextRun": "1900-01-01T01:01:00"
    },
    "CargoPlane": {
      "AnnounceNext": false,
      "Enabled": true,
      "MaximumTimeBetween": 45,
      "MinimumTimeBetween": 30,
      "NextRun": "1900-01-01T01:01:00"
    },
    "CargoShip": {
      "AnnounceNext": false,
      "Enabled": true,
      "MaximumTimeBetween": 45,
      "MinimumTimeBetween": 30,
      "NextRun": "1900-01-01T01:01:00"
    },
    "Chinook": {
      "AnnounceNext": false,
      "Enabled": true,
      "MaximumTimeBetween": 45,
      "MinimumTimeBetween": 30,
      "NextRun": "1900-01-01T01:01:00"
    },
    "EasterEvent": {
      "AnnounceNext": false,
      "Enabled": false,
      "MaximumTimeBetween": 60,
      "MinimumTimeBetween": 30,
      "NextRun": "1900-01-01T01:01:00"
    },
    "HalloweenEvent": {
      "AnnounceNext": false,
      "Enabled": false,
      "MaximumTimeBetween": 60,
      "MinimumTimeBetween": 30,
      "NextRun": "1900-01-01T01:01:00"
    },
    "Helicopter": {
      "AnnounceNext": false,
      "Enabled": true,
      "MaximumTimeBetween": 60,
      "MinimumTimeBetween": 45,
      "NextRun": "1900-01-01T01:01:00"
    },
    "SantaEvent": {
      "AnnounceNext": false,
      "Enabled": false,
      "MaximumTimeBetween": 60,
      "MinimumTimeBetween": 30,
      "NextRun": "1900-01-01T01:01:00"
    },
    "XMasEvent": {
      "AnnounceNext": false,
      "Enabled": false,
      "MaximumTimeBetween": 120,
      "MinimumTimeBetween": 60,
      "NextRun": "1900-01-01T01:01:00"
    }
  },
  "Settings": {
    "AnnounceOnLoad": "false",
    "UseGUIAnnouncementsPlugin": "false"
  }
}​

I reported this previously as well. The events will not run if AnnounceNext is set to false. Doesn't matter if Enabled is set to true, if AnnounceNext is set to false that event will not run.

https://umod.org/community/automated-events/14318-nextevent-command-not-working

Same problem reported 2 weeks ago.