# getPermitEffectiveEnd

> Effective end date of a permit: the day before its successor's start date when superseded; otherwise validuntil; none while the status is activependingrenewal or when there is no fixed expiry.

> **getPermitEffectiveEnd**(`well`, `permit`, `today?`): `string` \| `undefined`

Effective end date of a permit: the day before its successor's start date
when superseded; otherwise `valid_until`; none while the status is
`active_pending_renewal` or when there is no fixed expiry.

## Parameters

### well

`Well`

### permit

`Permit`

### today?

`string` = `...`

## Returns

`string` \| `undefined`