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Weekdays, weekday closures and Xetra sessions per calendar year

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 2026-09-16, from Xetra Trading Hours and Holidays 2026–2027.

as of table 2×5read in context →
Weekdays, weekday closures and Xetra sessions per calendar year — 2 rows by 5 columns, computed from US exchange, SIP and OPRA data.
calendar_yearweekdaysweekday_closuresxetra_sessionsweekend_holidays
202626172541
202726152563
Rows × columns
2 × 5
Computed
Completeness
No missing values
Source
US exchange, SIP and OPRA market data
Licence
Strasmore terms · free, no signup
Formats
JSON · CSV · the SQL below

What each column holds

Column definitions for Weekdays, weekday closures and Xetra sessions per calendar year, derived from the stored result.
ColumnTypeRangeNotes
calendar_year text 2 distinct values (2026, 2027)
weekdays number every row is 261
weekday_closures number 5 to 7
xetra_sessions number 254 to 256
weekend_holidays number 1 to 3

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.

the exact SQL behind every number 
WITH
    arrayMap(x -> toDate(x),
             ['2026-01-01', '2026-04-03', '2026-04-06', '2026-05-01',
              '2026-12-24', '2026-12-25', '2026-12-26', '2026-12-31',
              '2027-01-01', '2027-03-26', '2027-03-29', '2027-05-01',
              '2027-12-24', '2027-12-25', '2027-12-26', '2027-12-31']) AS closures
SELECT
    toString(toYear(day))                                      AS calendar_year,
    countIf(toDayOfWeek(day) <= 5)                             AS weekdays,
    countIf(toDayOfWeek(day) <= 5 AND has(closures, day))      AS weekday_closures,
    weekdays - weekday_closures                                AS xetra_sessions,
    countIf(toDayOfWeek(day) >= 6 AND has(closures, day))      AS weekend_holidays
FROM
(
    SELECT toDate('2026-01-01') + arrayJoin(range(730)) AS day
)
GROUP BY calendar_year
ORDER BY calendar_year

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