# forge.ta.timestamp

```python
forge.ta.timestamp(year: int, month: int, day: int, hour: int = 0, minute: int = 0, second: int = 0, *, tz: str = 'UTC') -> int
```

Nanoseconds UTC of a local time in ``tz``.

A local time a DST change skips does not exist and is refused; an ambiguous one (the hour a
change repeats) takes the first occurrence, the engine clock's rule.

Since Forge API 1.