Official Commack 2026-2027 school calendar with holidays, breaks, PDF, and calendar sync. Complete school year calendar for Commack UFSD in Suffolk County, Long Island. Includes all holidays, breaks, half days, and important dates from September 2026 through June 2027. 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 2, 2026 (Wed) | School Opens |
| Labor Day Recess | September 4, 2026 - September 7, 2026 | No School |
| Yom Kippur | September 21, 2026 (Mon) | No School |
| Columbus Day | October 12, 2026 (Mon) | No School |
| Thanksgiving Recess | November 25, 2026 - November 27, 2026 | No School |
| Winter Recess | December 24, 2026 - January 1, 2027 | No School |
| Martin Luther King Jr. Day | January 18, 2027 (Mon) | No School |
| Midwinter Recess | February 15, 2027 - February 19, 2027 | No School |
| Spring Recess #1 | March 25, 2027 - March 29, 2027 | No School |
| Spring Recess #2 | April 19, 2027 - April 23, 2027 | No School |
| Eid al-Adha | May 17, 2027 (Mon) | No School |
| Memorial Day | May 31, 2027 (Mon) | No School |
| Last Day of School | June 25, 2027 (Fri) | School Closes |
View the full 2026-2027 school year by month.
Commack Union Free School District is listed here with official 2026-2027 calendar data. The student year starts on Wednesday, September 2, 2026 and ends on Friday, June 25, 2027.
The main multi-day closure blocks are Labor Day Recess (Friday, September 4, 2026), Labor Day Recess (Monday, September 7, 2026), Thanksgiving Recess (Wednesday, November 25, 2026 through Friday, November 27, 2026), Winter Recess (Thursday, December 24, 2026 through Friday, January 1, 2027), Mid-Winter Recess (Monday, February 15, 2027 through Friday, February 19, 2027), Spring Recess #1 (Thursday, March 25, 2027 through Monday, March 29, 2027), Spring Recess #2 (Monday, April 19, 2027 through Friday, April 23, 2027).
Single-day closures and important calendar items include Yom Kippur (Monday, September 21, 2026), Columbus Day (Monday, October 12, 2026), Veteran's Day (Wednesday, November 11, 2026), Martin Luther King Jr. Day (Monday, January 18, 2027), Eid al Adha (Monday, May 17, 2027), Memorial Day (Monday, May 31, 2027).
Data source & handling: Official calendar from Commack Union Free School District (commack.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 Commack Union Free School District or NYSED. Official calendars can change - always check commack.k12.ny.us before making plans.
Last updated: March 17, 2026