The
| expiry: | Description |
| number | An absolute expiry time (UTC, milliseconds) |
| "day" (expiry: "day") | End-of-day. The time zone for the "day" is taken from the user's settings for the MyTrader platform. |
| {seconds: x} | Number of seconds from current time |
| {minutes: x} | Number of minutes from current time |
| {hours: x} | Number of hours from current time |