| Date | Time | Meet | Site |
| 3/9/21 | 4:00 PM | Deer Park / NB @ Brentwood / BS | Brentwood |
| 3/9/21 | 4:00 PM | HHH @ Ward Melville | Ward Melville |
| 3/9/21 | 4:00 PM | Lindenhurst @ Connetquot / EI | Connetquot |
| 3/9/21 | 4:00 PM | Sachem North @ Sayville / Bpt | Sayville Middle |
| 3/9/21 | 4:00 PM | Huntington / Whitman @ West Babylon | Deer Park |
| 3/10/21 | 4:00 PM | Hauppauge/Smithtown @ Sachem East | Sachem East |
| 3/10/21 | 4:00 PM | William Floyd @ West Islip | West Islip |
| 3/11/21 | 4:00 PM | West Islip @ Brentwood / Bay Shore | Brentwood |
| 3/11/21 | 4:00 PM | Ward Melville @ Lindenhurst | Lindenhurst |
| 3/11/21 | 4:00 PM | Sayville / Bpt @ Hauppauge / Smithtown | Hauppauge |
| 3/11/21 | 4:00 PM | West Babylon @ Deer Park / NB | Deer Park |
| 3/11/21 | 4:30 PM | Individual Meet #1 @ Connetquot | Connetquot |
| 3/11/21 | 4:00 PM | Huntington / Walt Whitman @ William Floyd | Brookhaven |
| 3/11/21 | 4:00 PM | Harborfields @ HHH | HHH |
| 3/11/21 | 4:00 PM | Connetquot / EI @ Central Islip | Central Islip |
| 3/15/21 | 4:00 PM | Harborfields @ Central Islip | Central Islip |
| 3/15/21 | 4:00 PM | Northport/Commack @ Sachem North | Sachem North |
| 3/16/21 | 5:00 PM | Harborfields @ West Islip | West Islip |
| 3/16/21 | 4:00 PM | Hauppauge / Smithtown @ Brentwood / BS | Brentwood |
| 3/16/21 | 4:00 PM | Huntington / Walt Whitman @ Connetquot / EI | Connetquot |
| 3/16/21 | 4:30 PM | Northport / Commack @ HHH | HHH |
| 3/16/21 | 6:00 PM | East Hampton vs Sachem East | Sachem East |
| | Top 40 Individual Times | |
| | Top Relays | |
| 3/17/21 | 4:30 PM | Individual Meet #2 @ Central Islip | Central Islip |
| 3/17/21 | 4:00 PM | Central Islip @ Sachem North | Sachem North |
| 3/17/21 | 4:00 PM | William Floyd @ Deer Park / NB | Deer Park |
| 3/18/21 | 5:00 PM | West Islip @ EH / BH / Pier | YMCA East Hampton |
| 3/18/21 | 4:00 PM | West Babylon @ Harborfields | Deer Park |
| 3/18/21 | 4:00 PM | Sayville/BB @ Lindenhurst | Lindenhurst |
| 3/18/21 | 4:15 PM | Sachem East @ Ward Melville | Ward Melville |
| 3/18/21 | 4:30 PM | Individual Meet #3 @ Sayville | Sayville Middle |
| 3/19/21 | 5:00 PM | Northport/Commack @ Hauppauge/Smithtown | Hauppauge |
| 3/19/21 | 4:00 PM | Brentwood / BS @ Connetquot / EI | Connetquot |
| 3/22/21 | 5:00 PM | Northport / Commack @ East Hampton | East Hampton YMCA |
| 3/23/21 | 4:00 PM | William Floyd @ Central Islip | Central Islip |
| 3/23/21 | 4:00 PM | Sachem North @ Sachem East | Sachem East |
| 3/23/21 | 4:30 PM | Individual Meet #4 @ Sachem North | Sachem North |
| 3/23/21 | 4:00 PM | HHH @ Huntington / Walt Whitman | HHH |
| 3/23/21 | 4:15 PM | Deer Park / NB @ Ward Melville | Ward Melville |
| 3/24/21 | 4:30 PM | EH / BH / Pier @ West Babylon | Deer Park |
| 3/24/21 | 4:00 PM | Lindenhurst @ Harborfields | Lindenhurst |
| 3/24/21 | 4:00 PM | Sayville / Bpt @ West Islip | West Islip |
| 3/25/21 | 5:00 PM | Connetquot / EI @ Northport / Commack | Connetquot |
| 3/25/21 | 4:00 PM | HHH @ Hauppauge / Smithtown | Hauppauge |
| 3/25/21 | 4:00 PM | Huntington/Walt Whitman @ Brentwood/Bay Shore | Brentwood |
| 3/25/21 | 4:30 PM | Individual Meet #5 @ HHH | HHH |
| 3/26/21 | 4:00 PM | West Babylon @ Lindenhurst | Lindenhurst |
| 3/26/21 | 4:00 PM | Sachem North @ Willam Floyd | Brookhaven |
| 3/26/21 | 4:15 PM | Ward Melville @ Central Islip | Central Islip |
| 3/29/21 | 5:00 PM | EH / BH / Pier @ Sayville / Bpt | Sayville Middle |
| | Top 40 Individual Times | |
| | Top 15 Relay Times | |
| 3/30/21 | 10:00 AM | Hauppauge / Smithtown @ Connetquot / EI | Connetquot |
| 3/30/21 | 4:00 PM | HHH @ Brentwood / BS | Brentwood |
| 3/31/21 | 12:00 PM | Central Islip @ Sachem East | Sachem East |
| 3/31/21 | 4:00 PM | Sachem North @ Deer Park / NB | Deer Park |
| 4/1/21 | 4:00 PM | Ward Melville @ Hauppauge / Smithtown | Hauppauge |
| | Top 75 Individual Times | |
| | Top 20 Relay Times | |
| 4/6/21 | 4:00 PM | Sayville / Bpt @ Harborfields | Sayville Middle |
| 4/6/21 | 4:00 PM | Sachem East @ Deer Park/North Babylon | Deer Park |
| 4/6/21 | 6:30 PM | West Islip @ West Babylon | Deer Park |
| 4/6/21 | 4:15 PM | William Floyd @ Ward Melville | Ward Melville |
| 4/6/21 | 5:00 PM | EH / BH / Pier @ Lindenhurst | Lindenhurst |
| 4/7/21 | 4:15 PM | Connetquot @ HHH | HHH |
| 4/7/21 | 4:00 PM | Huntington / Walt Whitman @ Hauppauge / Smithtown | Hauppauge |
| 4/7/21 | 4:30 PM | Northport / Commack @ Brentwood | Brentwood |
| 4/8/21 | 5:00 PM | Northport / Commack @ Huntington / Walt Whitman | Brentwood |
| 4/8/21 | 4:30 PM | Individual Meet #6 @ Sachem East | Sachem East |
| 4/8/21 | 4:00 PM | Deer Park / NB @ Central Islip | Central Islip |
| 4/8/21 | 4:15 PM | Ward Melville @ Sachem North | Sachem North |
| 4/8/21 | 4:00 PM | Sachem East @ William Floyd | Brookhaven |
| 4/9/21 | 4:00 PM | Lindenhurst @ West Islip(updated) | West Islip |
| 4/9/21 | 4:00 PM | West Babylon @ Sayville / Bpt | Sayville Middle |
| 4/9/21 | 5:00 PM | Haborfields @ EH / BH / Pier | YMCA East Hampton |
| | Top Individual Times | |
| | Relay Times | |
| 4/13/21 | 4:00 PM | League Diving – Dive Sheets Detailed Results Final Results | Hauppauge |
| 4/14/21 | 4:30 PM | League 1 Championship | Hauppauge |
| 4/15/21 | 4:30 PM | League 2 Championship | Sachem East |
| 4/16/21 | 4:00 PM | League 3 Championship | Virtual |
| | Overall Top Individual Times | |
| | Overall Top Relay Times | |
| | Top 75 Individual Times | |
| 4/22/21 | 4:30 PM | Section XI Diving Championship – Final Dive Sheets Detailed Results | Hauppauge HS |
| 4/24-25 | 10:00 AM | Section XI Swimming Championships | Stony Brook University |
| | Final Overall Top Individual Times | |
| | Final Overall Top Relay Times | |
