Nyx

ACROSS
1 Set of similarly related points
6 What you whip to make butter
10 It comes after ti
12 It might appear twice in a simile
14 Time period preceding the Roman Era
16 Childish question
17 Sign into law
19 Owner of an apartment building
21 In South Bend, it could be a band or journal
23 With regards to this puzzle, you might be one
25 Army member
26 Unit of thermal insulance
27 More than one wispy cloud
28 Iranian rulers
30 Inflamed
32 Biblical land of exile
33 Japanese belt
34 Like LIGHT when you solve this puzzle
35 Lit up
37 Charlie's predecessor
39 Leaf angles
42 Caulk
44 Levy or tariff
46 Rook cry
47 __ __...
49 Rides over snow
50 One with sticky fingers
52 ...or not __ __?
53 Weep
55 Where college students might take a stand?
56 Natural sealant
58 Listens to
60 e.g. Butyl acetate
62 Nose
64 Nuisance, or part of some fallacies
65 Center of distress signal
66 It might be hot
67 Joy
70 Thicc intensifier
72 Caterpillar for example
74 The winner might take it
75 What you might do with clothes or grievances
77 Creator of shoddy verse
79 They might be added to salt
82 Cause of friction in winter?
83 Estate house
84 Something to keep in mind in the subway
86 Most fashionable
87 Things that come to a point?
88 Brightest star in Virgo
89 Loose stones on a slope

DOWN
1 Flower worn to remember the Glorious 25th of May
2 Giving a speech
3 Pilot's instruments
4 Performs lazily, perhaps
5 Ragout
6 Discontinued breath mints
7 Nobody's reaction to this puzzle, we hope
8 Moment you might have later in this puzzle
9 Birds known for imitative skills
10 Difference
11 Loneliest number
12 One who treads the boards
13 Where left and right may be mixed up
15 Grp. of elephants?
18 Type of keratosis
20 Prunes, perhaps
22 Sumerian sky god
24 Capital of Morocco
39 It can be treated with antiretroviral therapy
31 ___ on the run
35 What a GI might find in the middle
36 Results of too many balls
37 Symbol of courage?
38 Survey response often involving extra work
39 Some figure skating jumps
40 Testing ground or dog breed
41 Band famous for song in 31
43 Downwind side of the boat
45 Trouble, or garlic
48 What comes before the bar?
50 Beverage insulator
51 Wonderful
54 From January to December
56 Chop leftover
57 Royal hanger-on
59 Silent Spring subject
61 Old French coin
63 The other side
67 Pa's mate
68 Achilles location?
69 Most people have around 100,000 of them
70 What's left after the coffee is gone
71 Gossip
72 Mowing targets
73 Homonoia's sister
76 Self, or type of card
78 Also
80 Stag partner
81 Blackjack
83 Self-centered pronoun?
85 Tangent's period