| 2023 | |
| January 1 | New Year’s Day |
| January 2 | New Year’s Day Observed – National Office Closed |
| January 12-16 | Train the Trainer (Irving, TX) |
| January 16 | Dr. Martin Luther King, Jr Day – National Office Closed |
| February 1 | Josh Sain Memorial Scholarship Applications Due |
| February 17-19 | NLS / DYLC – Eastern (Richmond, VA) |
| February 20 | Presidents’ Day – National Office Closed |
| March 17-19 | NLS / DYLC – Gateway (St Louis, MO) |
| March 20 | National Order of the Arrow Committee Meeting (Virtual) |
| March 24-26 | NLS / DYLC – Eastern (Pittsburgh, PA) |
| March 24-26 | NLS / DYLC – Gateway (St Paul, MN) |
| March 31 – April 2 | NLS / DYLC – Gateway (Boise, ID) |
| April 7 | Good Friday – National Office Closed |
| April 9 | Easter Sunday |
| May 29 | Memorial Day – National Office Closed |
| May 30 | National Order of the Arrow Committee Meeting (Atlanta, GA) |
| June 7 | OA Canadian Odyssey Begins (Northern Tier, Ely, MN) |
| June 7 | OA Wilderness Voyage Begins (Northern Tier, Ely, MN) |
| June 8 | OA Trail Crew Begins (Philmont Scout Ranch, Cimarron, NM) |
| June 11 | OA Summit Experience Begins (Summit Bechtel Reserve, Glen Jean, WV) |
| June 19 | Juneteenth – National Office Closed |
| July 4 | Independence Day – National Office Closed |
| July 9 | OA Summit Experience Ends (Summit Bechtel Reserve, Glen Jean, WV) |
| July 16-28 | Operation Arrow at the 2023 National Jamboree (Summit Bechtel Reserve, Glen Jean, WV) |
| August 16 | OA Canadian Odyssey Ends (Northern Tier, Ely, MN) |
| August 16 | OA Wilderness Voyage Ends (Northern Tier, Ely, MN) |
| August 17 | OA Trail Crew Ends (Philmont Scout Ranch, Cimarron, NM) |
| September 4 | Labor Day – National Office Closed |
| September 8-10 | NLS / DYLC – Eastern (Hillsdale, MI) |
| September 10 | National Order of the Arrow Committee Meeting (Virtual) |
| September 15-17 | NLS / DYLC – Gateway (Phoenix, AZ) |
| October 1 | OA Charter Renewal Kits Distributed |
| October 20-22 | SOS – Gateway (Schaumburg, IL) |
| October 27-29 | SOS – Eastern (Alpine, NJ) |
| November 10-12 | NLS / DYLC – Eastern (Atlanta, GA) |
| November 10-12 | NLS / DYLC – Gateway (Dallas, TX) |
| November 23-24 | Thanksgiving and Day After – National Office Closed |
| December 22 | Day Before Christmas Observed – National Office Closed |
| December 25 | Christmas – National Office Closed |
| December 27-30 | National Planning Meeting (Boulder, CO) |
| December 28 | National Order of the Arrow Committee Meeting (Boulder, CO) |
| December 31 | Lodge Charter Renewal Deadline |
| 2024 | |
| July 29 – August 3 | National Order of the Arrow Conference – University of Colorado Boulder (Boulder, CO) |
Key
DYLC – Developing Youth Leaders Conference
NLS – National Leadership Seminar
NCLS – National Conservation and Leadership Summit
SOS – Section Officers’ Seminar / Region Gathering