Per Day: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
First hundred users to get both stars on Day 20:
1) Dec 20 00:16:04
Robert Xiao
2) Dec 20 00:17:30 (anonymous user #798131)
3) Dec 20 00:20:24
Sophie Alpert (AoC++)
4) Dec 20 00:22:56
Tom Holmes
5) Dec 20 00:23:36 
Kevin Sun
6) Dec 20 00:25:02 
Bartosz Szreder
7) Dec 20 00:25:35
Nathan Fenner (AoC++)
8) Dec 20 00:25:40 
D. Salgado
9) Dec 20 00:25:48 
the-glu
10) Dec 20 00:25:50
betaveros (AoC++)
11) Dec 20 00:27:11
Alexander Haupt
13) Dec 20 00:27:29
David Wahler (AoC++)
14) Dec 20 00:28:08
ephemient (AoC++)
15) Dec 20 00:30:04 etotheipi1
16) Dec 20 00:30:44 
Andrey Anurin
(AoC++)
17) Dec 20 00:30:53 
Peter de Rivaz
18) Dec 20 00:31:05 
Yoshiap
19) Dec 20 00:31:14 
Jimmy Mårdell
(AoC++)
20) Dec 20 00:31:20 (anonymous user #685733)
21) Dec 20 00:31:41
penteract (AoC++)
22) Dec 20 00:32:56
ethframe
23) Dec 20 00:33:22 
Matthew Reeder
24) Dec 20 00:33:23
petertseng
25) Dec 20 00:33:43 
Toni Fadjukoff
(AoC++)
26) Dec 20 00:33:44
gengkev (AoC++)
27) Dec 20 00:33:58 
Erik Szalay
28) Dec 20 00:34:19
mcpower
30) Dec 20 00:34:36 
Snild Dolkow
31) Dec 20 00:35:13
Craig Gidney
32) Dec 20 00:35:18
Kroppeb (AoC++)
33) Dec 20 00:35:22 
msg555
34) Dec 20 00:36:13
Joey Marianer
35) Dec 20 00:36:16
Jennifer Zhou
36) Dec 20 00:37:36
Fengyang Wang (AoC++)
37) Dec 20 00:38:09
ttalvitie
38) Dec 20 00:38:52 
Max Murin
39) Dec 20 00:39:01 
twattanawaroon
40) Dec 20 00:39:08 
Chad Keever
41) Dec 20 00:39:20
Tomas Rokicki
42) Dec 20 00:39:33
Joel Jonsson (AoC++)
43) Dec 20 00:39:55
andy-k
44) Dec 20 00:40:29 
James Jiang
45) Dec 20 00:40:32 
Keypad SDM
46) Dec 20 00:41:00 (anonymous user #60233) (AoC++)
47) Dec 20 00:41:11
jorisvr
48) Dec 20 00:41:14 
Thomas Broquist
49) Dec 20 00:41:42
smrq
50) Dec 20 00:41:44 
João Caldeira
51) Dec 20 00:41:46
Lewin Gan
52) Dec 20 00:42:17
Martin Camacho (AoC++)
54) Dec 20 00:42:27 vash3r
55) Dec 20 00:42:29
tbodt
56) Dec 20 00:42:45 
angus-g
(AoC++)
57) Dec 20 00:42:52 
Benjamin Geiger
58) Dec 20 00:43:06 
Paul Zagieboylo
59) Dec 20 00:43:12
bwakell
60) Dec 20 00:43:39
sburuiana (AoC++)
61) Dec 20 00:43:55 
Vladimir Urdešić
62) Dec 20 00:44:37 
Niak
63) Dec 20 00:44:53 (anonymous user #204638) (AoC++)
64) Dec 20 00:44:53
Tim Vermeulen (AoC++)
65) Dec 20 00:44:55
Erik Amirell Eklöf
66) Dec 20 00:45:54
HansAnonymous
67) Dec 20 00:46:00 
Tautvydas Žilys
68) Dec 20 00:46:43 VeeArr
(AoC++)
69) Dec 20 00:46:56 
Matthew Everett
(AoC++)
70) Dec 20 00:47:06
Måns Magnusson
71) Dec 20 00:47:15
Oleg Godovykh (AoC++)
72) Dec 20 00:47:23 Kragnir
73) Dec 20 00:47:35
Kevin Scannell
74) Dec 20 00:47:38 
veryafe
(AoC++)
75) Dec 20 00:47:57 
Matt Gruskin
(AoC++)
76) Dec 20 00:48:20
msc-27 (AoC++)
77) Dec 20 00:48:25 (anonymous user #289309)
78) Dec 20 00:49:15 
ZED.Charley William Thairo
79) Dec 20 00:49:37 
Igor Naverniouk
(AoC++)
80) Dec 20 00:49:44 
Jan Kuipers
81) Dec 20 00:50:01
llyyr
82) Dec 20 00:50:03 
Jared Saul
83) Dec 20 00:50:05
sguest (AoC++)
84) Dec 20 00:50:21 
Michael Goldwasser
85) Dec 20 00:50:30 
Bill Rockenbeck
86) Dec 20 00:50:37 (anonymous user #505111)
87) Dec 20 00:50:50
Cameron Aavik (AoC++)
88) Dec 20 00:50:50
StijnSlot
89) Dec 20 00:51:00 (anonymous user #199929)
90) Dec 20 00:51:35
Unihedron (AoC++)
91) Dec 20 00:51:50 
Larry
92) Dec 20 00:51:57 
Peter Trebaticky
(AoC++)
93) Dec 20 00:52:29 
Oleg Rudenko
94) Dec 20 00:52:40
bluepichu
95) Dec 20 00:52:59
Darsein
96) Dec 20 00:53:00 
aditsu
97) Dec 20 00:53:05 
Michelle Yi
(AoC++)
98) Dec 20 00:53:07
Andrey
99) Dec 20 00:53:40
Kevin Wang
100) Dec 20 00:53:46 
Reid Price
First hundred users to get the first star on Day 20:
1) Dec 20 00:08:03
betaveros (AoC++)
2) Dec 20 00:08:17
Robert Xiao
3) Dec 20 00:11:30 (anonymous user #798131)
4) Dec 20 00:11:33 
Kevin Sun
5) Dec 20 00:11:55 
val tron
6) Dec 20 00:12:15
Alexander Haupt
7) Dec 20 00:12:23
Sophie Alpert (AoC++)
8) Dec 20 00:12:27 
Andrey Anurin
(AoC++)
9) Dec 20 00:12:49 
Jimmy Mårdell
(AoC++)
10) Dec 20 00:13:06
ExpHP
11) Dec 20 00:13:11
Victor Pontis (AoC++)
12) Dec 20 00:13:47
Chris Mohr (AoC++)
13) Dec 20 00:14:07
Nathan Fenner (AoC++)
14) Dec 20 00:14:10 
Bartosz Szreder
15) Dec 20 00:14:30 
Daniel Taylor
16) Dec 20 00:14:35
bcc32 (AoC++)
17) Dec 20 00:14:38 
the-glu
18) Dec 20 00:15:08 (anonymous user #44119)
19) Dec 20 00:15:23
glguy (AoC++)
20) Dec 20 00:15:44 
Keypad SDM
21) Dec 20 00:15:51 
Igor Naverniouk
(AoC++)
22) Dec 20 00:15:56 (anonymous user #638222)
23) Dec 20 00:15:58 
Yoshiap
24) Dec 20 00:16:30
Kroppeb (AoC++)
25) Dec 20 00:16:41 (anonymous user #685733)
26) Dec 20 00:16:43 
Ethan Morgan
(AoC++)
27) Dec 20 00:16:49
bluepichu
29) Dec 20 00:16:50
gengkev (AoC++)
30) Dec 20 00:17:04
sburuiana (AoC++)
31) Dec 20 00:17:11
Tom Holmes
33) Dec 20 00:17:22
David Wahler (AoC++)
34) Dec 20 00:17:37
ephemient (AoC++)
35) Dec 20 00:17:50
pfg
36) Dec 20 00:18:22
joefarebrother
37) Dec 20 00:18:22 
mserrano
38) Dec 20 00:18:32
Martin Camacho (AoC++)
39) Dec 20 00:18:38 
ZED.Charley William Thairo
40) Dec 20 00:18:51 
Matthew Reeder
41) Dec 20 00:18:56
Fengyang Wang (AoC++)
42) Dec 20 00:18:57 (anonymous user #618035)
43) Dec 20 00:19:01
Jennifer Zhou
44) Dec 20 00:19:21 zergling_Lester
45) Dec 20 00:19:27 
Michael Goldwasser
46) Dec 20 00:19:30
nthistle
47) Dec 20 00:19:39 
Chad Keever
48) Dec 20 00:19:44
Joey Marianer
49) Dec 20 00:19:47
Andrey
50) Dec 20 00:19:49 
Evan Jeffrey
51) Dec 20 00:19:51 
Robert Tupelo-Schneck
52) Dec 20 00:19:54 
Toni Fadjukoff
(AoC++)
53) Dec 20 00:20:09
Matthew Merrill
54) Dec 20 00:20:42 (anonymous user #204638) (AoC++)
55) Dec 20 00:20:49 
Max Murin
56) Dec 20 00:20:51 
D. Salgado
57) Dec 20 00:20:54
Lewin Gan
58) Dec 20 00:20:56
petertseng
59) Dec 20 00:20:58
GregorKikelj
60) Dec 20 00:21:00
penteract (AoC++)
61) Dec 20 00:21:10
kajott
62) Dec 20 00:21:52
ttalvitie
63) Dec 20 00:21:53 agent_who_glows
(AoC++)
64) Dec 20 00:22:00 (anonymous user #390615)
65) Dec 20 00:22:00 
Tom Sirgedas
66) Dec 20 00:22:07 (anonymous user #334314)
67) Dec 20 00:22:17 
skyhawk33
68) Dec 20 00:22:27
ethframe
70) Dec 20 00:22:33 Kragnir
71) Dec 20 00:22:38 (anonymous user #60233) (AoC++)
72) Dec 20 00:22:40 
Benjamin Geiger
73) Dec 20 00:22:42 
James Jiang
74) Dec 20 00:22:55 (anonymous user #752285)
75) Dec 20 00:23:29
andy-k
76) Dec 20 00:23:31
Kevin Yap (AoC++)
77) Dec 20 00:23:40
Nick Gavalas
78) Dec 20 00:23:44 
Snild Dolkow
79) Dec 20 00:23:46 
kagami hiiragi
80) Dec 20 00:23:50 
Erik Szalay
81) Dec 20 00:23:52
Oleg Godovykh (AoC++)
82) Dec 20 00:23:54 
Sondre Sortland
(AoC++)
83) Dec 20 00:23:58 
bradleysigma
84) Dec 20 00:23:58 
Peter de Rivaz
85) Dec 20 00:24:01 
veryafe
(AoC++)
86) Dec 20 00:24:09 (anonymous user #198392)
87) Dec 20 00:24:22 
Joshua Wise
(AoC++)
88) Dec 20 00:24:31
mcpower
89) Dec 20 00:24:33
Marcelo Fornet
90) Dec 20 00:25:21 
Emily Dobervich
91) Dec 20 00:25:26
jorisvr
92) Dec 20 00:25:28 etotheipi1
93) Dec 20 00:25:58
Darsein
95) Dec 20 00:25:59
Matt Bradley
96) Dec 20 00:26:12
Joel Jonsson (AoC++)
97) Dec 20 00:26:14
jebouin (AoC++)
98) Dec 20 00:26:15 
twattanawaroon
99) Dec 20 00:26:21
Craig Gidney
100) Dec 20 00:26:31 
Thomas Broquist