On this day in the Star Trek universe:

Star Trek: The Next Generation (1989)

Star Trek: Voyager (1998)

Star Trek: The Next Generation

Season 2. Episode 13.

Episode entitled: Time Squared.

Released April 1, 1989.

Directed by Joseph L. Scanlan.

Written by Maurice Hurley, Kurt Michael Bensmiller, Melinda M. Snodgrass.

Created by Gene Roddenberry.

Music by Dennis McCarthy.

Cast: Patrick Stewart, Jonathan Frakes, LeVar Burton, Michael Dorn, Marina Sirtis, Brent Spiner, Wil Wheaton, Colm Meaney, Diana Muldaur, Rachen Assapiomonwait, Dexter Clay.

Star Trek: Voyager

Season 4. Episode 20.

Episode entitled: Vis À Vis.

Released April 1, 1998.

Directed by Jesús Salvador Treviño.

Created by Rick Berman, Michael Piller, Jeri Taylor.

Written by Robert J. Doherty, Bryan Fuller, Lisa Klink.

Based on Star Trek, created by Gene Roddenberry.

Music by Dennis McCarthy.

Cast: Kate Mulgrew, Robert Beltran, Roxann Biggs-Dawson, Robert Duncan McNeill, Ethan Phillips, Robert Picardo, Tim Russ, Garrett Wang, Jeri Ryan, Dan Butler, Mary Elizabeth McGlynn, Majel Barrett.