Common comparison error
Clock expiry is not necessarily measured from button press; acceptance, cutoff, fixed clock, and Timer expiry can change the interval.
GlossaryPricing & settlement
Clock expiry
An expiry control that sets an exact settlement time, such as 16:30:00, instead of a relative countdown.
Practical use
How to verify Clock expiry
Read Clock expiry together with Time to expiry, Timer expiry, Expiry cutoff. The comparison must preserve the exact rule, value, state, and evidence described below.
A neutral example
A stock remains visible during Clock expiry on a holiday. A test establishes whether orders are disabled, a prior close persists, or Time to expiry pricing replaces the market. A reviewer labels the case Clock expiry only after showing that 16:30:00 is a fixed settlement clock time rather than five minutes measured from acceptance.
Evidence path
Where to verify Clock expiry
Use the source that governs the exact contract, account, entity, or platform state. A general definition cannot replace current broker terms.