The trading session a prediction is made for — the day whose open→close move grades it.
A call is logged before the open for a specific session; that session is its call day, and only that day's open and close can grade it. A call logged on a weekend or holiday is assigned to the next trading session.
The call day, not the timestamp the agent ran, is what appears in every record and dataset row (as_of_date). It is also what the pre-open lock is checked against.
Related: Pre-open lock · Open-to-close grading · Graded call
Full grading rules: methodology.
Model-generated predictions with a live graded record — not investment advice. 模型生成的预测，非投资建议。