Table:
text: List of interplanetary voyages
1990s
1990s
Spacecraft Destination Launched Closest_approach Time_elapsed
Cassini Venus 15 October 1997 24 June 1999 618 days (1 yr, 8 mo, 10 d)
Cassini Asteroid 2685 Masursky 15 October 1997 23 January 2000 831 days (2 yr, 3 mo, 9 d)
Cassini Jupiter 15 October 1997 30 December 2000 1173 days (3 yr, 2 mo, 16 d)
Nozomi Mars 3 July 1998 14 December 2003 1991 days (5 yr, 5 mo, 12 d)
Deep Space 1 Asteroid 9969 Braille 24 October 1998 29 July 1999 279 days (9 months, 6 days)
Deep Space 1 Comet 19P/Borrelly 24 October 1998 22 September 2001 1065 days (2 yr, 10 mo, 30 d)

text: List of interplanetary voyages
1990s
1990s
Spacecraft Destination Launched Closest_approach Time_elapsed
Ulysses Jupiter 6 October 1990 8 February 1992 491 days (1 yr, 4 mo, 3 d)
Ulysses Jupiter 6 October 1990 4 February 2004 4870 days (13 yr, 3 mo, 30 d)
Near Earth Asteroid Rendezvous Asteroid 253 Mathilde 17 February 1996 27 June 1997 497 days (1 yr, 4 mo, 11 d)
Near Earth Asteroid Rendezvous Asteroid 433 Eros 17 February 1996 23 December 1998 1041 days (2 yr, 10 mo, 7 d)
Cassini Venus 15 October 1997 26 April 1998 194 days (6 months, 12 days)

Question: How much time elapsed for both the October 15, 1997 launch and the June 24, 1999 closest approach for the 1990s interplanetary travel list?