The US trading day converted into Japan Standard Time: static illustrative reference, July 2026
Answered against 22 years of US equities and 12 years of US options data and published with the query that produced it. This result is stored as of 2026-07-31, from Trading US 0DTE Options From Japan.
| us_session_marker | eastern_time | japan_time | japan_calendar_day | hours_after_tokyo_close |
|---|---|---|---|---|
| Premarket opens | 04:00 | 17:00 | same day | 1.5 |
| Opening bell | 09:30 | 22:30 | same day | 7 |
| First hour ends | 10:30 | 23:30 | same day | 8 |
| Midday | 12:00 | 01:00 | next day | 9.5 |
| Closing bell | 16:00 | 05:00 | next day | 13.5 |
| After-hours ends | 20:00 | 09:00 | next day | 17.5 |
- Rows × columns
- 6 × 5
- Computed
- Completeness
- No missing values
- Source
- US exchange, SIP and OPRA market data
- Licence
- Strasmore terms · free, no signup
What each column holds
| Column | Type | Range | Notes |
|---|---|---|---|
us_session_marker |
text | 6 distinct values | |
eastern_time |
text | 6 distinct values (04:00, 09:30, 10:30…) | |
japan_time |
text | 6 distinct values (01:00, 05:00, 09:00…) | |
japan_calendar_day |
text | 2 distinct values (next day, same day) | |
hours_after_tokyo_close |
number | 1.5 to 17.5 | US dollars |
Computed from Strasmore's warehouse of US exchange, SIP and OPRA market data. Equity prices are delayed; options greeks and implied volatility are end-of-day. This result is stored, not recomputed on load — it is exactly the numbers that were returned on , and the query below is what returned them.
Run it yourself
This is the exact query behind the result above. Change a ticker, a date or a column and run it against the warehouse — no account, no key. The no-signup tier is smaller than the one this page was computed on; a query that reaches past it comes back saying which plan runs it.
SELECT
m.1 AS us_session_marker,
m.2 AS eastern_time,
m.3 AS japan_time,
m.4 AS japan_calendar_day,
m.5 AS hours_after_tokyo_close
FROM
(
SELECT arrayJoin([
('Premarket opens', '04:00', '17:00', 'same day', 1.5),
('Opening bell', '09:30', '22:30', 'same day', 7.0),
('First hour ends', '10:30', '23:30', 'same day', 8.0),
('Midday', '12:00', '01:00', 'next day', 9.5),
('Closing bell', '16:00', '05:00', 'next day', 13.5),
('After-hours ends', '20:00', '09:00', 'next day', 17.5)
]) AS m
)
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