# `Tempo.InvalidCalendarError`
[🔗](https://github.com/elixir-tempo/tempo/blob/v2.1.0/lib/tempo/exception/invalid_calendar_error.ex#L1)

A module or a name that is no calendar Tempo can ask.

# `t`

```elixir
@type t() :: %Tempo.InvalidCalendarError{__exception__: term(), calendar: term()}
```

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*Consult [api-reference.md](api-reference.md) for complete listing*