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      "switch_utc": "2025-06-16T22:00:00+00:00",
      "difference": 226.75
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    {
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      "switch_utc": "2025-09-16T22:00:00+00:00",
      "difference": 238.0
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    {
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      "switch_utc": "2025-12-15T23:00:00+00:00",
      "difference": 246.5
    },
    {
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      "switch_utc": "2026-03-16T22:00:00+00:00",
      "difference": 217.5
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    {
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      "switch_utc": "2026-06-15T22:00:00+00:00",
      "difference": 303.5
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    {
      "from_contract": "NQU26-CME",
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      "switch_utc": "2026-09-14T22:00:00+00:00",
      "difference": 294.75
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  ]
}