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:
| No. in season | No. disc | Title | Directed by | Written by | Original air date |
| --- | --- | --- | --- | --- | --- |
| 1.0 | 1.0 | "Into the Fire (2)" | Martin Wood | Brad Wright | June25,1999 ( Showtime ) |
| 2.0 | 1.0 | "Seth" | William Corcoran | Jonathan Glassner | July2,1999 (Showtime) |
| 3.0 | 1.0 | "Fair Game" | Martin Wood | Robert C. Cooper | July9,1999 (Showtime) |
| 4.0 | 1.0 | "Legacy" | Peter DeLuise | Tor Alexander Valenza | July16,1999 (Showtime) |
| 5.0 | 2.0 | "Learning Curve" | Martin Wood | Heather E. Ash | July23,1999 (Showtime) |
| 7.0 | 2.0 | "Deadman Switch" | Martin Wood | Robert C. Cooper | August6,1999 (Showtime) |
| 8.0 | 2.0 | "Demons" | Peter DeLuise | Carl Binder | August13,1999 (Showtime) |
| 9.0 | 2.0 | "Rules of Engagement" | William F. Gereghty | Terry Curtis Fox | August20,1999 (Showtime) |
| 10.0 | 3.0 | "Forever in a Day" | Peter DeLuise | Jonathan Glassner | October8,1999 (Showtime) |
| 11.0 | 3.0 | "Past and Present" | William F. Gereghty | Tor Alexander Valenza | October15,1999 (Showtime) |
| 12.0 | 3.0 | "Jolinar's Memories (1)" | Peter DeLuise | Sonny Wareham & Daniel Stashower | October22,1999 (Showtime) |
| 13.0 | 3.0 | "The Devil You Know (2)" | Peter DeLuise | Robert C. Cooper | October29,1999 (Showtime) |
| 14.0 | 4.0 | "Foothold" | Andy Mikita | Heather E. Ash | November5,1999 (Showtime) |
| 15.0 | 4.0 | "Pretense" | David Warry-Smith | Katharyn Powers | December12,1999 ( Sky One ) |
| 16.0 | 4.0 | " Urgo " | Peter DeLuise | Tor Alexander Valenza | December19,1999 (Sky One) |
| 17.0 | 4.0 | "A Hundred Days" | David Warry-Smith | Brad Wright | January7,2000 (Sky One) |
| 18.0 | 5.0 | "Shades of Grey" | Martin Wood | Jonathan Glassner | January14,2000 (Sky One) |
| 19.0 | 5.0 | "New Ground" | Chris McMullen | Heather E. Ash | January21,2000 (Sky One) |
| 20.0 | 5.0 | "Maternal Instinct" | Peter Woeste | Robert C. Cooper | January28,2000 (Sky One) |
Question:
What is the original air date for episode 17 in the season?
Answer:
January7,2000 (Sky One)