On this day in the Star Trek universe:

Star Trek (1967)

Star Trek: The Next Generation (1991)

Star Trek: Voyager (2000)

Star Trek

Season 1. Episode 19.

Episode entitled: Tomorrow Is Yesterday.

Released January 26, 1967.

Directed by Michael O'Herlihy.

Written by D.C. Fontana.

Created by Gene Roddenberry.

Music by Alexander Courage.

Cast: William Shatner, Leonard Nimoy, Nichelle Nichols, DeForest Kelley, James Doohan, George Takei, Roger Perry, Hal Lynch, Richard Merrifield, John Winston, Ed Peck, Mark Dempsey, Jim Spencer, Sherri Townsend, Majel Barrett, Bill Blackburn, John Burnside, Frank da Vinci, Eddie Paskey.

Star Trek: The Next Generation

Season 4. Episode 12.

Episode entitled: The Wounded.

Released January 26, 1991.

Directed by Chip Chalmers.

Written by Jeri Taylor, Stuart Charno, Sara B. Cooper / Sara Charno, Cy Chermak, Ronald D. Moore, Joe Menosky, David Carren, J. Larry Carroll.

Created by Gene Roddenberry.

Music by Dennis McCarthy.

Cast: Patrick Stewart, Jonathan Frakes, LeVar Burton, Michael Dorn, Gates McFadden, Marina Sirtis, Brent Spiner, Bob Gunton, Rosalind Chao, Marc Alaimo, Colm Meaney, Marco Rodríguez, Time Winters, John Hancock, Majel Barrett, Tracee Cocco, Denise Deuschle, Eben Ham, Jeri McBride, James McElroy.

Star Trek: Voyager

Season 6. Episode 13.

Episode entitled: Virtuoso.

Released January 26, 2000.

Directed by Les Landau.

Created by Rick Berman, Michael Piller, Jeri Taylor.

Written by Raf Green, Kenneth Biller, Raf Green, Bryan Fuller, Michael Taylor, Robert Doherty.

Based on Star Trek, created by Gene Roddenberry.

Music by Dennis McCarthy.

Cast: Kate Mulgrew, Robert Beltran, Roxann Dawson, Robert Duncan McNeill, Ethan Phillips, Robert Picardo, Tim Russ, Garrett Wang, Jeri Ryan, Kamala Lopez-Dawson, Ray Xifo, Paul Williams, Marie Caldare, Nina Magnesson, Rico Bueno, Leonard Crofoot, Zadrina Eisenmann, Tarik Ergin, Peter Scott Harmyk, Nichole McAuley, Tom Miller, Joey Sakata, Lou Saliba, Pablo Soriano, Paris Themmen.