laravel-snowflake/config/snowflake.php

<?php
return [
    'epoch' => env('SNOWFLAKE_EPOCH', '2017-10-13 00:00:00'),
    'worker_id' => env('SNOWFLAKE_WORKER_ID', 1),
    'datacenter_id' => env('SNOWFLAKE_DATACENTER_ID', 1),
];