Common comparison error
The label end of day under End of day expiry does not identify which venue close or Payout schedule boundary governs.
A contract that settles at a specified market or broker day boundary rather than after a short countdown.
The label end of day under End of day expiry does not identify which venue close or Payout schedule boundary governs.
Read End-of-day expiry together with Expiry-only observation, Payout schedule, Time to expiry. The comparison must preserve the exact rule, value, state, and evidence described below.
An End of day expiry schedule shifts at daylight saving. UTC hours and exchange notices prevent a one-hour error in Expiry only observation. This cannot be swapped with a neighboring term: for End of day expiry, the governing day boundary must name venue, timezone, holiday treatment, and settlement method.
Use the source that governs the exact contract, account, entity, or platform state. A general definition cannot replace current broker terms.