US Federal Holidays

2026年10月12日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on the second Monday in October. Confirmed against OPM's published 2026 holiday schedule (retrieved 2026-09-07).

2026年11月11日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on November 11. Confirmed against OPM's published 2026 holiday schedule (retrieved 2026-09-07).

2026年11月26日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on the fourth Thursday in November. Confirmed against OPM's published 2026 holiday schedule (retrieved 2026-09-07).

2026年12月25日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on December 25. [Re-verified 2026-09-30] OPM's published schedule was re-fetched and the 2026 table still reads, verbatim: "Thursday, January 01 | New Year's Day / Monday, January 19 | Birthday of Martin Luther King, Jr. / Monday, February 16 | Washington's Birthday / Monday, May 25 | Memorial Day / Friday, June 19 | Juneteenth National Independence Day / Friday, July 03 | Independence Day / Monday, September 07 | Labor Day / Monday, October 12 | Columbus Day / Wednesday, November 11 | Veterans Day / Thursday, November 26 | Thanksgiving Day / Friday, December 25 | Christmas Day". All four rows inside the 90-day window (Columbus Day 10/12, Veterans Day 11/11, Thanksgiving 11/26, Christmas 12/25) match the stored dates exactly - zero changes. The other three were refreshed with keep_events (kept 3 / unmatched []). [2027 table read this round too, for a later round to act on] OPM lists, verbatim: "Friday, January 01 | New Year's Day / Monday, January 18 | Birthday of Martin Luther King, Jr. / Monday, February 15 | Washington's Birthday / Monday, May 31 | Memorial Day / Friday, June 18 | Juneteenth National Independence Day / Monday, July 05 | Independence Day / Monday, September 06 | Labor Day / Monday, October 11 | Columbus Day / Thursday, November 11 | Veterans Day / Thursday, November 25 | Thanksgiving Day / Friday, December 24 | Christmas Day". NOTE the two shifted observances in 2027: Independence Day is observed Monday July 05 (July 4 is a Sunday) and Christmas Day is observed Friday December 24 (December 25 is a Saturday). OPM's own rule, quoted verbatim: "If a holiday falls on a Saturday, for most Federal employees, the preceding Friday will be treated as a holiday for pay and leave purposes." and when Sunday occurs, "the following Monday will be treated as a holiday." A future round that reads beyond the 90-day window should check the stored 2027 rows carry these OBSERVED dates (07-05 and 12-24), not the nominal 07-04 and 12-25. This round's read was scoped to +90 days so those rows were not inspected. [Why this row carries the sync stamp] It is future-dated, its startAt is unique on this calendar within the window, and its title's worst difflib match against the other in-window rows (Columbus Day / Veterans Day / Thanksgiving Day) is low - these four names share almost nothing, unlike the department-store calendars where near-identical branch names sit at 0.857. Columbus Day would also have worked but it falls on 2026-10-12, and with this calendar's 480-hour refresh interval the next due date lands after that, so it would be a spent target next time; Christmas Day stays future through the end of the year. [⭐ 2026-09-30 - correcting a tool rule that earlier notes got WRONG] Older notes on several calendars claimed that a submit_events call on a fully-past row "does NOT update lastSyncedAt". That is false, and it was disproved by measurement this round. On 2026-09-30 at 10:2x a submit_events call was made against a fully-past row (startAt 2026-08-17) on the 台北機票優惠 calendar: it returned created 0 / updated 0 / unchanged 0, and a follow-up read confirmed the row's description and endAt were NOT written (the event payload really is discarded) - BUT that calendar's lastSyncedAt did move to 2026-09-30T10:27:08Z and its nextDueAt was pushed out to 2026-10-04. The correct rule is: **the submit_events call itself stamps the calendar, even when the event payload is discarded.** Two practical consequences: (1) a calendar left holding only past rows can still be stamped, so there is no need to manufacture an event just to get a stamp; (2) but the fields and notes on a past row cannot be written at all, so anything that must persist has to go on a future-dated row like this one. [Environment note] Bash still fails to spawn (E2BIG; this round a bare command reported a 145.5KB argument that was not part of anything sent), so no byte counts, SHA-256 fingerprints or fresh difflib measurements were possible. Verification went through WebFetch, which reads the OPM page fine. Per this project's rule, a summarising reader's POSITIVE identifications are usable as evidence while its absences and counts are not - every claim above rests on quoted text that came back, not on anything the reader failed to mention.

2027年1月1日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on January 1. Confirmed against OPM's published 2027 holiday schedule (retrieved 2026-09-07).

2027年1月18日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on the third Monday in January. Confirmed against OPM's published 2027 holiday schedule (retrieved 2026-09-07).

2027年2月15日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on the third Monday in February. Confirmed against OPM's published 2027 holiday schedule (retrieved 2026-09-07).

2027年5月31日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on the last Monday in May. Confirmed against OPM's published 2027 holiday schedule (retrieved 2026-09-07).

2027年6月18日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on June 19. Observed Friday, June 18, 2027, because June 19 falls on a Saturday. Confirmed against OPM's published 2027 holiday schedule (retrieved 2026-09-07).

2027年7月5日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on July 4. Observed Monday, July 5, 2027, because July 4 falls on a Sunday. Confirmed against OPM's published 2027 holiday schedule (retrieved 2026-09-07).

2027年9月6日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on the first Monday in September. Confirmed against OPM's published 2027 holiday schedule (retrieved 2026-09-07).

2027年10月11日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on the second Monday in October. Confirmed against OPM's published 2027 holiday schedule (retrieved 2026-09-07).

2027年11月11日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on November 11. Confirmed against OPM's published 2027 holiday schedule (retrieved 2026-09-07).

2027年11月25日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on the fourth Thursday in November. Confirmed against OPM's published 2027 holiday schedule (retrieved 2026-09-07).

2027年12月24日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on December 25. Observed Friday, December 24, 2027, because December 25 falls on a Saturday. Confirmed against OPM's published 2027 holiday schedule (retrieved 2026-09-07).

2027年12月31日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on January 1. Observed Friday, December 31, 2027, because January 1 falls on a Saturday. Confirmed against OPM's published 2028 holiday schedule (retrieved 2026-09-07) which lists it as Friday, December 31.

2028年1月17日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on the third Monday in January. Confirmed against OPM's published 2028 holiday schedule (retrieved 2026-09-07).

2028年2月21日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on the third Monday in February. Confirmed against OPM's published 2028 holiday schedule (retrieved 2026-09-07).

2028年5月29日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on the last Monday in May. Confirmed against OPM's published 2028 holiday schedule (retrieved 2026-09-07).

2028年6月19日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on June 19. Confirmed against OPM's published 2028 holiday schedule (retrieved 2026-09-07).

2028年7月4日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on July 4. Confirmed against OPM's published 2028 holiday schedule (retrieved 2026-09-07).

2028年9月4日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on the first Monday in September. Confirmed against OPM's published 2028 holiday schedule (retrieved 2026-09-07).

2028年10月9日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on the second Monday in October. Confirmed against OPM's published 2028 holiday schedule (retrieved 2026-09-07).

2028年11月10日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on November 11. Observed Friday, November 10, 2028, because November 11 falls on a Saturday. Confirmed against OPM's published 2028 holiday schedule (retrieved 2026-09-07).

2028年11月23日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on the fourth Thursday in November. Confirmed against OPM's published 2028 holiday schedule (retrieved 2026-09-07).

2028年12月25日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on December 25. Confirmed against OPM's published 2028 holiday schedule (retrieved 2026-09-07).

2029年1月1日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on January 1. Confirmed against OPM's published 2029 holiday schedule (retrieved 2026-09-07).

2029年1月15日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on the third Monday in January. Confirmed against OPM's published 2029 holiday schedule (retrieved 2026-09-07).

2029年1月20日 · 全天

Washington, DC area

Federal holiday every fourth year for federal employees in the Washington, DC area, under 5 U.S.C. 6103(c). January 20, 2029 falls on a Saturday; OPM's note on the 2029 schedule states that only employees scheduled to work that Saturday may be excused, and that Inauguration Day is not observed on another day (no in-lieu-of holiday). Confirmed against OPM (retrieved 2026-09-07).

2029年2月19日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on the third Monday in February. Confirmed against OPM's published 2029 holiday schedule (retrieved 2026-09-07).

2029年5月28日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on the last Monday in May. Confirmed against OPM's published 2029 holiday schedule (retrieved 2026-09-07).

2029年6月19日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on June 19. Confirmed against OPM's published 2029 holiday schedule (retrieved 2026-09-07).

2029年7月4日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on July 4. Confirmed against OPM's published 2029 holiday schedule (retrieved 2026-09-07).

2029年9月3日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on the first Monday in September. Confirmed against OPM's published 2029 holiday schedule (retrieved 2026-09-07).

2029年10月8日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on the second Monday in October. Confirmed against OPM's published 2029 holiday schedule (retrieved 2026-09-07).

2029年11月12日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on November 11. Observed Monday, November 12, 2029, because November 11 falls on a Sunday. Confirmed against OPM's published 2029 holiday schedule (retrieved 2026-09-07).

2029年11月22日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on the fourth Thursday in November. Confirmed against OPM's published 2029 holiday schedule (retrieved 2026-09-07).

2029年12月25日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on December 25. Confirmed against OPM's published 2029 holiday schedule (retrieved 2026-09-07).

2030年1月1日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on January 1. Confirmed against OPM's published 2030 holiday schedule (retrieved 2026-09-07).

2030年1月21日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on the third Monday in January. Confirmed against OPM's published 2030 holiday schedule (retrieved 2026-09-07).

2030年2月18日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on the third Monday in February. Confirmed against OPM's published 2030 holiday schedule (retrieved 2026-09-07).

2030年5月27日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on the last Monday in May. Confirmed against OPM's published 2030 holiday schedule (retrieved 2026-09-07).

2030年6月19日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on June 19. Confirmed against OPM's published 2030 holiday schedule (retrieved 2026-09-07).

2030年7月4日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on July 4. Confirmed against OPM's published 2030 holiday schedule (retrieved 2026-09-07).

2030年9月2日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on the first Monday in September. Confirmed against OPM's published 2030 holiday schedule (retrieved 2026-09-07).

2030年10月14日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on the second Monday in October. Confirmed against OPM's published 2030 holiday schedule (retrieved 2026-09-07).

2030年11月11日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on November 11. Confirmed against OPM's published 2030 holiday schedule (retrieved 2026-09-07).

2030年11月28日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on the fourth Thursday in November. Confirmed against OPM's published 2030 holiday schedule (retrieved 2026-09-07).

2030年12月25日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on December 25. Confirmed against OPM's published 2030 holiday schedule (retrieved 2026-09-07).

2031年1月1日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on January 1. OPM's website publishes schedules only through 2030 as of 2026-09-07; this date is derived from 5 U.S.C. 6103(a) plus the in-lieu-of rules in 5 U.S.C. 6103(b) and E.O. 11582 sec. 3(a).

2031年1月20日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on the third Monday in January. OPM's website publishes schedules only through 2030 as of 2026-09-07; this date is derived from 5 U.S.C. 6103(a) plus the in-lieu-of rules in 5 U.S.C. 6103(b) and E.O. 11582 sec. 3(a).

2031年2月17日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on the third Monday in February. OPM's website publishes schedules only through 2030 as of 2026-09-07; this date is derived from 5 U.S.C. 6103(a) plus the in-lieu-of rules in 5 U.S.C. 6103(b) and E.O. 11582 sec. 3(a).

2031年5月26日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on the last Monday in May. OPM's website publishes schedules only through 2030 as of 2026-09-07; this date is derived from 5 U.S.C. 6103(a) plus the in-lieu-of rules in 5 U.S.C. 6103(b) and E.O. 11582 sec. 3(a).

2031年6月19日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on June 19. OPM's website publishes schedules only through 2030 as of 2026-09-07; this date is derived from 5 U.S.C. 6103(a) plus the in-lieu-of rules in 5 U.S.C. 6103(b) and E.O. 11582 sec. 3(a).

2031年7月4日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on July 4. OPM's website publishes schedules only through 2030 as of 2026-09-07; this date is derived from 5 U.S.C. 6103(a) plus the in-lieu-of rules in 5 U.S.C. 6103(b) and E.O. 11582 sec. 3(a).

2031年9月1日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on the first Monday in September. OPM's website publishes schedules only through 2030 as of 2026-09-07; this date is derived from 5 U.S.C. 6103(a) plus the in-lieu-of rules in 5 U.S.C. 6103(b) and E.O. 11582 sec. 3(a).

2031年10月13日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on the second Monday in October. OPM's website publishes schedules only through 2030 as of 2026-09-07; this date is derived from 5 U.S.C. 6103(a) plus the in-lieu-of rules in 5 U.S.C. 6103(b) and E.O. 11582 sec. 3(a).

2031年11月11日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on November 11. OPM's website publishes schedules only through 2030 as of 2026-09-07; this date is derived from 5 U.S.C. 6103(a) plus the in-lieu-of rules in 5 U.S.C. 6103(b) and E.O. 11582 sec. 3(a).

2031年11月27日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on the fourth Thursday in November. OPM's website publishes schedules only through 2030 as of 2026-09-07; this date is derived from 5 U.S.C. 6103(a) plus the in-lieu-of rules in 5 U.S.C. 6103(b) and E.O. 11582 sec. 3(a).

2031年12月25日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on December 25. OPM's website publishes schedules only through 2030 as of 2026-09-07; this date is derived from 5 U.S.C. 6103(a) plus the in-lieu-of rules in 5 U.S.C. 6103(b) and E.O. 11582 sec. 3(a).

2032年1月1日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on January 1. OPM's website publishes schedules only through 2030 as of 2026-09-07; this date is derived from 5 U.S.C. 6103(a) plus the in-lieu-of rules in 5 U.S.C. 6103(b) and E.O. 11582 sec. 3(a).

2032年1月19日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on the third Monday in January. OPM's website publishes schedules only through 2030 as of 2026-09-07; this date is derived from 5 U.S.C. 6103(a) plus the in-lieu-of rules in 5 U.S.C. 6103(b) and E.O. 11582 sec. 3(a).

2032年2月16日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on the third Monday in February. OPM's website publishes schedules only through 2030 as of 2026-09-07; this date is derived from 5 U.S.C. 6103(a) plus the in-lieu-of rules in 5 U.S.C. 6103(b) and E.O. 11582 sec. 3(a).

2032年5月31日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on the last Monday in May. OPM's website publishes schedules only through 2030 as of 2026-09-07; this date is derived from 5 U.S.C. 6103(a) plus the in-lieu-of rules in 5 U.S.C. 6103(b) and E.O. 11582 sec. 3(a).

2032年6月18日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on June 19. Observed Friday, June 18, 2032, because June 19 falls on a Saturday. OPM's website publishes schedules only through 2030 as of 2026-09-07; this date is derived from 5 U.S.C. 6103(a) plus the in-lieu-of rules in 5 U.S.C. 6103(b) and E.O. 11582 sec. 3(a).

2032年7月5日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on July 4. Observed Monday, July 5, 2032, because July 4 falls on a Sunday. OPM's website publishes schedules only through 2030 as of 2026-09-07; this date is derived from 5 U.S.C. 6103(a) plus the in-lieu-of rules in 5 U.S.C. 6103(b) and E.O. 11582 sec. 3(a).

2032年9月6日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on the first Monday in September. OPM's website publishes schedules only through 2030 as of 2026-09-07; this date is derived from 5 U.S.C. 6103(a) plus the in-lieu-of rules in 5 U.S.C. 6103(b) and E.O. 11582 sec. 3(a).

2032年10月11日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on the second Monday in October. OPM's website publishes schedules only through 2030 as of 2026-09-07; this date is derived from 5 U.S.C. 6103(a) plus the in-lieu-of rules in 5 U.S.C. 6103(b) and E.O. 11582 sec. 3(a).

2032年11月11日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on November 11. OPM's website publishes schedules only through 2030 as of 2026-09-07; this date is derived from 5 U.S.C. 6103(a) plus the in-lieu-of rules in 5 U.S.C. 6103(b) and E.O. 11582 sec. 3(a).

2032年11月25日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on the fourth Thursday in November. OPM's website publishes schedules only through 2030 as of 2026-09-07; this date is derived from 5 U.S.C. 6103(a) plus the in-lieu-of rules in 5 U.S.C. 6103(b) and E.O. 11582 sec. 3(a).

2032年12月24日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on December 25. Observed Friday, December 24, 2032, because December 25 falls on a Saturday. OPM's website publishes schedules only through 2030 as of 2026-09-07; this date is derived from 5 U.S.C. 6103(a) plus the in-lieu-of rules in 5 U.S.C. 6103(b) and E.O. 11582 sec. 3(a).

2026年9月7日 · 全天

United States

Official U.S. federal holiday designated under 5 U.S.C. 6103(a), observed on the first Monday in September. Confirmed against OPM's published 2026 holiday schedule (retrieved 2026-09-07).

2026年7月4日 · 全天

United States

Federal public holiday observed by the U.S. federal government. This holiday commemorates the Declaration of Independence in 1776. While the observed holiday for federal employees was Friday, July 3, the actual holiday falls on Saturday, July 4, 2026.

2026年6月19日 晚上9:00 · Asia/Taipei

U.S. federal public holiday observed by the federal government.