When Does the Hang Seng Open in EST? Hong Kong Stock Market Hours in Eastern Time
The short answer: the Hong Kong stock market, home of the Hang Seng Index, opens at 9:30 a.m. Hong Kong time. That is 9:30 PM EDT through October 31, 2026, and 8:30 PM EST from November 1, 2026, on the US evening before the Hong Kong trading day.
Hong Kong stock market hours in Eastern Time
Hong Kong Time (HKT) is UTC+8 all year.
| Session | Hong Kong time | In EDT (summer) | In EST (winter) |
|---|---|---|---|
| Pre-opening auction | 9:00–9:30 a.m. | 9:00–9:30 PM | 8:00–8:30 PM |
| Morning session | 9:30 a.m.–12:00 p.m. | 9:30 PM–12:00 AM | 8:30–11:00 PM |
| Lunch break | 12:00–1:00 p.m. | 12:00–1:00 AM | 11:00 PM–12:00 AM |
| Afternoon session | 1:00–4:00 p.m. | 1:00–4:00 AM | 12:00–3:00 AM |
| Closing auction | 4:00 p.m. to about 4:10 p.m. | 4:00 to about 4:10 AM | 3:00 to about 3:10 AM |
EDT applies from the second Sunday in March to the first Sunday in November. EST applies the rest of the year. In 2026, US clocks fall back on Sunday, November 1.
Half-day sessions
On the eves of Christmas, New Year and Lunar New Year, Hong Kong usually runs a morning session only, with no afternoon trading. The closing auction then follows the noon close.
Trading in severe weather
Since September 23, 2024, the exchange has stayed open when a typhoon signal No. 8 or higher or a black rainstorm warning is in force. Before that change, such warnings could cancel part or all of a trading day.
Hang Seng and mainland stocks
The Hang Seng Index tracks the largest companies listed in Hong Kong, many of which have most of their business in mainland China. Hong Kong opens at the same local time as Shanghai and Shenzhen, but closes an hour later. Through the Stock Connect programs, some mainland investors trade Hong Kong stocks and vice versa, and those links follow both markets' holiday calendars.
Following Hong Kong from the US
US-listed funds such as the iShares MSCI Hong Kong ETF (EWH) trade during New York hours, while Hong Kong is closed. Their moves may not match the next Hang Seng session.
For more markets, see our World stock market hours in Eastern Time guide.
Published October 19, 2026. Times reflect the exchange's published securities market hours as of that date. Educational information only, not investment advice.