Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Series # | Season # | Title | Directed by | Written by | Musical guest and song | Original air date | Production code |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 56.0 | 4.0 | "Blue Boy" | Frederick K. Keller | Natalie Chaidez | Soraya "Quédate" | September 19, 1996 | K1504 |
| 57.0 | 5.0 | "Rule of Engagement" | Martha Mitchell | Judith McCreary | BLACKstreet " Yearning for Your Love " | September 26, 1996 | K1505 |
| 58.0 | 6.0 | "Kill the Noise" | Don Kurt | Judith McCreary | New Edition " You Don't Have to Worry " | October 31, 1996 | K1511 |
| 59.0 | 7.0 | "Smack is Back" | Jesús Salvador Treviño | Steven Phillip Smith | Tito Puente "Asia Mood" | November 7, 1996 | K1506 |
| 60.0 | 8.0 | "Don't Blink" | Allen Coulter | Reggie Rock Bythewood | George Benson " This Masquerade " | November 14, 1996 | K1507 |
| 61.0 | 9.0 | "Without Mercy" | Frederick K. Keller | Gar Anthony Haywood | The Tony Rich Project "Leavin'" | November 21, 1996 | K1508 |
| 62.0 | 10.0 | "Going Platinum" | Allen Coulter | Larry Moskowitz | Phil Collins "Oughta Know by Now" | December 5, 1996 | K1509 |
| 63.0 | 11.0 | "Brown Like Me" | Norberto Barba | Reggie Rock Bythewood & Jorge A. Reyes | Celia Cruz "Azúcar Negra" | December 19, 1996 | K1510 |
| 64.0 | 12.0 | "Grim Reaper" | Frederick K. Keller | Judith McCreary | Groove Theory "People Make the World Go Round" | January 9, 1997 | K1512 |
| 65.0 | 13.0 | "Fade Out" | Matthew Penn | Denitria Harris-Lawrence | Aaliyah " Choosey Lover " | January 16, 1997 | K1513 |
| 67.0 | 15.0 | "School's Out" | Martha Mitchell | Steven Phillip Smith | Gerald Levert " A Song for You " | February 6, 1997 | K1516 |
| 68.0 | 16.0 | "Outrage" | Allen Coulter | Larry Moskowitz | James Ingram "One Hundred Ways" | February 13, 1997 | K1517 |
| 69.0 | 17.0 | " The Promised Land " | Don Kurt | Reggie Rock Bythewood | Richie Havens " God Bless the Child " | February 20, 1997 | K1519 |
| 70.0 | 18.0 | "Descell" | Frederick King Keller | Reggie Rock Bythewood | Mint Condition " Family Affair " | March 13, 1997 | K1521 |
| 71.0 | 19.0 | "Hubris" | Timothy Van Patten | Judith McCreary | Lisa Stansfield " You Know How to Love Me " | March 27, 1997 | K1520 |
| 73.0 | 21.0 | "Vendetta" | Nick Gomez | Larry Moskowitz | Erykah Badu "Stay" | April 24, 1997 | K1524 |
| 75.0 | 23.0 | "No Place Like Hell" | Norberto Barba | Reggie Rock Bythewood | Tracy Chapman "The Promise" | May 8, 1997 | K1526 |
Question:
What is theoriginal air date of the episode directed by timothy van patten?
Answer:
March 27, 1997