Official Half Hollow Hills 2025-2026 school calendar with holidays, breaks, PDF, and calendar sync. Complete school year calendar for Half Hollow Hills Central School District (Long Island). Includes all holidays, breaks, and important dates. Includes all holidays, breaks, half days, and important dates from September 2025 through June 2026. Dates are manually collected and screened from district-published calendar materials. Printable PDF and Google/Apple Calendar sync options are available below. Updated March 17, 2026.
| Event | Date(s) | Status |
|---|---|---|
| First Day of School | September 4, 2025 (Thu) | School Opens |
| Rosh Hashanah | September 23, 2025 (Tue) | No School |
| Rosh Hashanah | September 24, 2025 (Wed) | No School |
| Yom Kippur | October 2, 2025 (Thu) | No School |
| Columbus Day | October 13, 2025 (Mon) | No School |
| Diwali | October 20, 2025 (Mon) | No School |
| Veterans Day | November 11, 2025 (Tue) | No School |
| Thanksgiving | November 27, 2025 (Thu) | No School |
| Day after Thanksgiving | November 28, 2025 (Fri) | No School |
| Holiday Recess | December 24, 2025 - January 2, 2026 | No School |
| Martin Luther King Jr. Day | January 19, 2026 (Mon) | No School |
| Winter Recess | February 16, 2026 - February 20, 2026 | No School |
| Eid al-Fitr | March 20, 2026 (Fri) | No School |
| Spring Recess | April 2, 2026 - April 10, 2026 | No School |
| Memorial Day | May 25, 2026 (Mon) | No School |
| Eid al-Adha | May 27, 2026 (Wed) | No School |
| Juneteenth | June 19, 2026 (Fri) | No School |
| Last Day of School | June 26, 2026 (Fri) | School Closes |
View the full 2025-2026 school year by month.
Half Hollow Hills Central School District is listed here with official 2025-2026 calendar data. The student year starts on Thursday, September 4, 2025 and ends on Friday, June 26, 2026.
The main multi-day closure blocks are Holiday Recess (Wednesday, December 24, 2025 through Friday, January 2, 2026), Winter Recess (Tuesday, February 17, 2026 through Friday, February 20, 2026), Spring Recess (Thursday, April 2, 2026 through Friday, April 10, 2026).
Single-day closures and important calendar items include Rosh Hashanah (Tuesday, September 23, 2025), Rosh Hashanah (Day 2) (Wednesday, September 24, 2025), Yom Kippur (Thursday, October 2, 2025), Columbus Day (Monday, October 13, 2025), Diwali (Monday, October 20, 2025), Veterans Day (Tuesday, November 11, 2025), Early Dismissal (Wednesday, November 26, 2025), Thanksgiving (Thursday, November 27, 2025), plus additional dated items in the table below.
Data source & handling: Official calendar from Half Hollow Hills Central School District (hhh.k12.ny.us). We manually collect and screen dates from district materials, then organize them into key dates, printable PDF, and calendar sync.
Disclaimer: This site is not affiliated with Half Hollow Hills Central School District or NYSED. Official calendars can change - always check hhh.k12.ny.us before making plans.
Last updated: March 17, 2026