Exchange hours
The four exchanges, their sessions, and how the on-chain calendar decides whether a market is open.
Every coin is bound to one of four exchanges at creation. The contract that answers "is this market open right now?" is called MarketCalendar, and every trade, on the curve or in the pool, asks it first.
The four exchanges
| Exchange | City | Regular session (local) | Lunch |
|---|---|---|---|
| NYSE | New York | 09:30 to 16:00 | none |
| LSE | London | 08:00 to 16:30 | none |
| HKEX | Hong Kong | 09:30 to 12:00, 13:00 to 16:00 | 12:00 to 13:00 |
| TSE | Tokyo | 09:00 to 11:30, 12:30 to 15:30 | 11:30 to 12:30 |
Sessions are half-open: the market is open at 09:30:00 and closed at 16:00:00 exactly. Weekends are always closed.
Lunch is a real close
Hong Kong and Tokyo shut for lunch. During lunch nothing trades, and the afternoon reopening counts as a fresh open: the opening tax applies again at 13:00 in Hong Kong and 12:30 in Tokyo. Two bells a day, two tax windows.
Time zones and daylight saving
The calendar works in each exchange's local time and converts to the chain's clock itself. New York and London move their clocks twice a year; Hong Kong and Tokyo do not. The rules for those transitions are code, not settings, so a session never drifts by an hour by mistake. The site shows every countdown in your own local time and labels the bars on the timeline in exchange local time.
Holidays
Real exchanges close for holidays and sometimes close early. Those days live in the calendar contract as exceptions. The calendar shipped with the holidays and half days for 2026 through 2028 for all four exchanges, generated from the exchanges' published calendars.
The thirty day rule
The owner of the calendar can add, change or remove a holiday, but only for dates at least thirty local days in the future, and never more than twenty five closures in a year per exchange. Nobody can close a market for tomorrow. Nobody can close it indefinitely.
What "closed" means for you
- Buys and sells revert with
MarketClosed, whichever wallet or router sends them. - Transfers between wallets still work. The token is a plain ERC20.
- Creating a coin still works. Its first session simply starts at the next bell.
- Claiming creator fees and holder rewards still works.
So a closed market is not a frozen token. It is a market where nobody can change the price until the bell.
The chain's clock is the truth
Robinhood Chain produces a block roughly every hundred milliseconds and stamps it with a one-second timestamp. That timestamp is what the calendar reads. The site syncs its countdowns to it, so what you see is what the contract will decide, not your computer's clock.