Protocol

Oracle and TradingCalendar

Where closes come from and how the protocol knows when the market is open.

Dependencies

Two contracts decide every outcome: TradingCalendar (when) and OracleAdapter (what price).

Stores NYSE trading days, holidays and early closes, published by governance a year ahead.

Regular session 09:30 to 16:00 New York time. Early closes end at 13:00. Observations use the regular close.

Wraps one Chainlink feed per underlying and returns the first round at or after the scheduled close, together with its age.

Feed	Decimals	Heartbeat	Deviation
Robinhood AAPL / USD	8	24 h	0.5%
Robinhood NVDA / USD	8	24 h	0.5%
Robinhood TSLA / USD	8	24 h	0.5%
Other templates	8	24 h	0.5%

Feeds run on a 24/5 equities schedule. Proxy addresses are listed on Addresses.

The app shows the latest print next to the reference close so users can see the cushion to the barrier before an observation is due.

A scheduled observation on a holiday moves to the next trading day.

Prices are compared after the Stock Token's UI multiplier so corporate actions do not distort levels.

Failure	Response
No round within the window	Observation waits; retried later
Feed stale for 72 h	Series settles at the last good price
Negative or zero answer	Rejected