Definitions for "expiration time"
The time of day at which an option expires on the expiration date. After this time, the option may no longer be exercised.
The time of day by which all exercise notices must be received on the expiration date. Check with your Account Executive regarding your brokerage firm's deadline for submitting exercise notices on expiration Friday.
The time when the value of a variable will expire. This is calculated for all values of variables and displayed in the attribute table.