# forge.ta.killzones

```python
forge.ta.killzones(time_open: ArrayLike, asia_hours: str = '20:00-00:00', asia_tz: str = 'America/New_York', london_open_hours: str = '02:00-05:00', london_open_tz: str = 'America/New_York', new_york_open_hours: str = '07:00-10:00', new_york_open_tz: str = 'America/New_York', london_close_hours: str = '10:00-12:00', london_close_tz: str = 'America/New_York') -> dict[str, np.ndarray]
```

Four named windows, each true on the bars that open inside it.

Each window has its own hours and time zone. A bar is inside a window when it opens at or
after the start and before the end; hours that end before they start run past midnight.
``time_open`` is in nanoseconds (UTC).

Since Forge API 1.

## Class forge.ta.Killzones

```python
forge.ta.Killzones(**inputs: Any) -> None
```

Named session windows, each in its own time zone, shaded on the chart and usable as filters.

Each window runs from the start to the end of its hours (asia_hours, london_open_hours, new_york_open_hours, london_close_hours) in its own time zone (asia_tz, london_open_tz, new_york_open_tz, london_close_tz). A bar is inside a window when it opens at or after the start and before the end; hours that end before they start run past midnight.

in_asia, in_london_open, in_new_york_open and in_london_close are true on the bars inside each window.

Since Forge API 1.