Session Boxes
Asia, London, and New York session boxes with first-hour opening ranges, projected session high and low lines, and the New York after-hours extension.
Artemis Pro draws the three sessions that structure the trading day: Asia, London, and New York. Each session gets an opening range box for its first hour and dashed lines that project that range's high and low across the whole session.
The Three Sessions
| Session | Window | Time zone | Default |
|---|---|---|---|
| Asia | 00:30–07:00 | UTC | on |
| London | 08:00–16:30 | Europe/London | on |
| New York | 09:30–16:00 | America/New_York | on |
| New York after-hours extension | 16:00–17:00 | America/New_York | on |
Each session has its own toggle and its own session-string input, so you can switch any of them off or reshape the windows without touching the others. The after-hours extension is not a fourth session: it carries the New York opening range levels past the close, and it has its own toggle and window too.

What Gets Drawn
When a session opens, Artemis Pro starts two things:
The opening range box. For the first 60 minutes of the session, a gray-filled box tracks the running high and low. After the first hour, the box stops growing: that rectangle is the session's opening range.
Opening range high and low lines. Two dashed horizontal lines, red for the opening range high and green for the opening range low, extend from the session open through the entire session. Once the first hour is over, they stay fixed at the opening range extremes, projecting them forward as the session's reference levels.
The New York after-hours extension. When the New York session closes at 16:00, its opening range high and low lines keep going as dotted, more transparent lines until 17:00 New York time. Dashed means the main session, dotted means after-hours. Only the two levels extend; the opening range box itself ends with the session.