# OperatingRegime

> The operating_regime optional block of a .well file: a list of OperatingRegime objects.

Property `operating_regime` of the .well root, an array of objects, optional. [Defined in the spec](/format/spec/v2/object-schemas#operatingregime).

| Field | Type | Required | Values / constraints | Description |
| --- | --- | --- | --- | --- |
| `id` | string | yes |  |  |
| `effective_from` | string | yes | pattern `^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}(\.\d+)?(Z\|[+-]\d{2}:\d{2})$` |  |
| `flow_rate` | number | no | >= 0 |  |
| `daily_operating_time` | number | no | >= 0 |  |
| `days_per_week` | integer | no | >= 1; <= 7 |  |
| `notes` | string | no |  |  |
| `updated_at` | string | no | pattern `^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}(\.\d+)?(Z\|[+-]\d{2}:\d{2})$` |  |