Looking back from the late 90s, I found a few occasions that are somewhat in keeping with the question, some less so
Mon 13/01/2003 19:45 - Portsmouth (A)
Fri 17/01/2003 19:45 - Sheff W (H)
Same week, both at night, not both at home
Tues 09/12/2003 19:45 - Walsall (H)
Sat 13/12/2003 17:35 - Watford (H)
Depends on what is defined as "night"
Tues 12/04/2005 19:45 - Nottingham Forest (A)
Fri 15/04/2005 19:45 - Derby County (H)
Same week, both at night, not both at home
Tues 21/11/2017 19:45 - Fulham (H)
Sat 25/11/2017 17:30 - Birmingham (H)
Depends on what is defined as "night"
Weds 08/07/2020 18:00 - Wolves
Sat 11/07/2020 17:30 - Chelsea
Depends on what is defined as "night"
Tues 02/02/2021 18:00 - WBA
Sun 07/02/2021 19:15 - Chelsea
Depends on what is defined as "night"
I'd argue that the last one in particular is valid. 6pm and 7:15pm kick offs are ones I'd describe as "night matches".
The first one of these is also interesting, in that they were not originally intended to be played in the same week. The Portsmouth game was postponed on Sat 11th Jan, I believe due to a waterlogged pitch. But because the game had been selected for broadcast by Sky, there was a huge effort made to play the game soon enough that it could still be on TV. So we played it 2 days later instead.