fgo-game-data/master/mstMasterMission.json

[{
    "id": 10001,
    "priority": 0,
    "startedAt": 1562556600,
    "endedAt": 1893456000,
    "closedAt": 1893456000,
    "imageId": 0,
    "name": ""
}, {
    "id": 100259,
    "priority": 0,
    "startedAt": 1653264000,
    "endedAt": 1653868799,
    "closedAt": 1654473599,
    "imageId": 0,
    "name": ""
}, {
    "id": 100260,
    "priority": 0,
    "startedAt": 1653868800,
    "endedAt": 1654473599,
    "closedAt": 1655078399,
    "imageId": 0,
    "name": ""
}]