Sessions

Signals outside the configured sessions are logged and notified but never executed.

Windows are defined in the exchange’s own timezone and compared after converting the current instant into that zone, so daylight saving is handled by the tz database instead of drifting an hour twice a year. Weekends are excluded. Boundaries are half-open: a window includes its start minute and excludes its end minute.

TRADING_SESSIONS=tokyo,new_york            # empty = trade around the clock
SESSION_TOKYO=Asia/Tokyo:09:00-18:00
SESSION_NEW_YORK=America/New_York:08:00-17:00

Always-on (Deriv)

The Deriv profile ships with TRADING_SESSIONS= (empty), because synthetic indices trade continuously and cash-session hours mean nothing for them. Set tokyo,new_york on that profile only if you intentionally want to gate it.

Spec format

Each named session resolves to TZ_NAME:HH:MM-HH:MM (e.g. Asia/Tokyo:09:00-18:00). Unknown session names or malformed specs fail at startup with exit code 1 — never mid-signal.

Windows and tzdata

zoneinfo needs a tz database. Windows ships none — the tzdata package is a hard dependency for that reason (pip install -e . pulls it in).