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 21:
1) Dec 21 00:06:44 
Pi-Hsun Shih
2) Dec 21 00:06:54
tckmn
3) Dec 21 00:07:33 (anonymous user #193354)
4) Dec 21 00:07:35
hyperneutrino
5) Dec 21 00:08:43
MarshallOfSound
6) Dec 21 00:09:25
dllu
7) Dec 21 00:09:38
betaveros (AoC++)
8) Dec 21 00:09:42
Ryan Fitzgerald
9) Dec 21 00:10:01
Robert Xiao (AoC++)
10) Dec 21 00:10:16 
bradleysigma
11) Dec 21 00:10:22 
Kevin Sun
12) Dec 21 00:10:41
maneframe (AoC++)
13) Dec 21 00:10:51 
segiddins
14) Dec 21 00:10:52
bluepichu
15) Dec 21 00:11:01 
nicholasjma
16) Dec 21 00:11:12
spraints (AoC++)
17) Dec 21 00:11:25 (anonymous user #151221)
18) Dec 21 00:11:28 
Adam Jimenez
19) Dec 21 00:11:30
ecnerwala (AoC++)
20) Dec 21 00:11:34 
Maarten van der Zwaart
21) Dec 21 00:11:35 
mingmingrr
22) Dec 21 00:11:38 
Lewin Gan
23) Dec 21 00:11:42
jkseppan (AoC++)
24) Dec 21 00:11:42 (anonymous user #614991)
25) Dec 21 00:11:42 
Laurentiu Ionele
27) Dec 21 00:11:44
Sophie Alpert (AoC++)
28) Dec 21 00:11:47 
D. Salgado
29) Dec 21 00:11:47
jhurwitz
30) Dec 21 00:12:00
Tom Holmes
31) Dec 21 00:12:00
hltk
32) Dec 21 00:12:01 
noblematt
(AoC++)
33) Dec 21 00:12:05 
Michael Andrews
(AoC++)
34) Dec 21 00:12:07
drougge (AoC++)
35) Dec 21 00:12:10 
Vanessa Heckman
(AoC++)
36) Dec 21 00:12:10 
Mr. Robol
(AoC++)
37) Dec 21 00:12:11
kevinmchung (AoC++)
38) Dec 21 00:12:18
Zachary Liu
39) Dec 21 00:12:21 
val tron
40) Dec 21 00:12:40
nthistle
41) Dec 21 00:12:42 
Niak
42) Dec 21 00:12:46
Gordon Chan (AoC++)
43) Dec 21 00:13:02
gengkev (AoC++)
44) Dec 21 00:13:06 
Thomas Feld
45) Dec 21 00:13:19 
Carl Schildkraut
46) Dec 21 00:13:28
leijurv (AoC++)
47) Dec 21 00:13:29 
Ian DeHaan
48) Dec 21 00:13:30
Nick Gavalas
49) Dec 21 00:13:34
Neal Wu
50) Dec 21 00:13:37 
Jimmy Chen
52) Dec 21 00:13:41 
Christopher Lambert
53) Dec 21 00:13:47
Anish Singhani
54) Dec 21 00:13:50 
Blaž Peterlin
(AoC++)
55) Dec 21 00:13:50
Gorane7
56) Dec 21 00:13:58 
ManyPinkHats
57) Dec 21 00:14:05
alfredxing
58) Dec 21 00:14:07
Olivia Kaufman (AoC++)
59) Dec 21 00:14:08
Rémy Pecqueur
60) Dec 21 00:14:12 
ruuddotorg
61) Dec 21 00:14:16 
ddlatham
(AoC++)
62) Dec 21 00:14:18
Jay Foad (AoC++)
63) Dec 21 00:14:22
jtbandes (AoC++)
64) Dec 21 00:14:22
hughcoleman
65) Dec 21 00:14:23
petertseng (AoC++)
66) Dec 21 00:14:25 (anonymous user #1149354)
67) Dec 21 00:14:31
m-schm
68) Dec 21 00:14:32 (anonymous user #44119)
69) Dec 21 00:14:33 (anonymous user #199929)
70) Dec 21 00:14:33 
Antonio Molina
71) Dec 21 00:14:35
sciyoshi
72) Dec 21 00:14:38 
Timothy Elling
73) Dec 21 00:14:44 
mserrano
74) Dec 21 00:14:47
quentinmit
75) Dec 21 00:14:50 
Yusuf Elsharawy
76) Dec 21 00:14:51
anominos
77) Dec 21 00:14:52 
Colton Pauderis
(AoC++)
78) Dec 21 00:14:57 
Kai Si
(AoC++)
79) Dec 21 00:15:01
wim glenn (AoC++)
80) Dec 21 00:15:02
xiaowuc1
81) Dec 21 00:15:03 
Vladislav Isenbaev
82) Dec 21 00:15:05 
Luke Schaeffer
83) Dec 21 00:15:12
rHermes (AoC++)
84) Dec 21 00:15:12
Paul Draper
85) Dec 21 00:15:14 
Gabriel C
86) Dec 21 00:15:15 
Sam Wang
87) Dec 21 00:15:16 
mlucy
(AoC++)
88) Dec 21 00:15:22 (anonymous user #436598)
89) Dec 21 00:15:25 VeeArr
(AoC++)
90) Dec 21 00:15:25 
Shik Chen
91) Dec 21 00:15:26
stristr (AoC++)
92) Dec 21 00:15:37
Starwort
93) Dec 21 00:15:38 
Nick Egan
94) Dec 21 00:15:40
Joel Gibson
95) Dec 21 00:15:47 
Johan Lindblad
(AoC++)
97) Dec 21 00:15:59
RZachLamberty (AoC++)
98) Dec 21 00:16:00
Patrick Hogg (AoC++)
99) Dec 21 00:16:03
Tim Vermeulen (AoC++)
100) Dec 21 00:16:05 
Michelle Dobbs
(AoC++) First hundred users to get the first star on Day 21:
1) Dec 21 00:04:44 (anonymous user #193354)
2) Dec 21 00:04:46 
Pi-Hsun Shih
3) Dec 21 00:05:05
hyperneutrino
4) Dec 21 00:05:14
tckmn
5) Dec 21 00:05:30 
Christopher Lambert
6) Dec 21 00:05:52 
nicholasjma
7) Dec 21 00:06:07
Sophie Alpert (AoC++)
8) Dec 21 00:06:11
MarshallOfSound
9) Dec 21 00:06:13
jhurwitz
10) Dec 21 00:06:52
drougge (AoC++)
11) Dec 21 00:06:57 
Ian DeHaan
12) Dec 21 00:07:09
Anish Singhani
13) Dec 21 00:07:10 
Adam Jimenez
14) Dec 21 00:07:16
maneframe (AoC++)
15) Dec 21 00:07:28
dllu
16) Dec 21 00:07:31
jkseppan (AoC++)
17) Dec 21 00:07:35
Robert Xiao (AoC++)
19) Dec 21 00:07:40
ecnerwala (AoC++)
20) Dec 21 00:07:42 
Niak
21) Dec 21 00:07:43 
Michael Andrews
(AoC++)
22) Dec 21 00:07:44 
segiddins
23) Dec 21 00:07:46 
noblematt
(AoC++)
24) Dec 21 00:07:47
hughcoleman
25) Dec 21 00:07:52 
D. Salgado
26) Dec 21 00:07:53
gengkev (AoC++)
27) Dec 21 00:07:54
RedwolfPrograms
28) Dec 21 00:07:56
Ryan Fitzgerald
29) Dec 21 00:08:00
heinrich5991
30) Dec 21 00:08:05
betaveros (AoC++)
31) Dec 21 00:08:07 (anonymous user #151221)
32) Dec 21 00:08:13 
Jakub Holubanský
33) Dec 21 00:08:13 
Sam Wang
34) Dec 21 00:08:13
Paul Draper
35) Dec 21 00:08:15 
bradleysigma
36) Dec 21 00:08:17 
ruuddotorg
37) Dec 21 00:08:19
Gordon Chan (AoC++)
38) Dec 21 00:08:26
arknave (AoC++)
39) Dec 21 00:08:29
hltk
40) Dec 21 00:08:31 (anonymous user #614991)
41) Dec 21 00:08:36 
mlucy
(AoC++)
42) Dec 21 00:08:38
Patrick Hogg (AoC++)
43) Dec 21 00:08:38 
Kevin Sun
44) Dec 21 00:08:42 
mingmingrr
45) Dec 21 00:08:51
bluepichu
46) Dec 21 00:08:54 
Thomas Feld
47) Dec 21 00:09:05 
Lewin Gan
48) Dec 21 00:09:10
Måns Magnusson
49) Dec 21 00:09:12 
Vanessa Heckman
(AoC++)
50) Dec 21 00:09:16 
Blaž Peterlin
(AoC++)
51) Dec 21 00:09:17
somebody1234
52) Dec 21 00:09:20
Rémy Pecqueur
53) Dec 21 00:09:23
Danny Lin
54) Dec 21 00:09:35
Jay Foad (AoC++)
55) Dec 21 00:09:38 
Timothy Elling
56) Dec 21 00:09:48 
esusalla
57) Dec 21 00:09:49 
Carl Schildkraut
58) Dec 21 00:09:50 (anonymous user #703053)
59) Dec 21 00:09:53
spraints (AoC++)
60) Dec 21 00:09:56 
Paul Martinez
(AoC++)
61) Dec 21 00:09:56
Nick Gavalas
62) Dec 21 00:09:59
Tom Holmes
63) Dec 21 00:09:59 
miriam-rittenberg
64) Dec 21 00:09:59 (anonymous user #406649)
65) Dec 21 00:10:02
Roderic Day
66) Dec 21 00:10:06
Neal Wu
67) Dec 21 00:10:10 
Johan Lindblad
(AoC++)
68) Dec 21 00:10:11 
Maarten van der Zwaart
69) Dec 21 00:10:12
Starwort
70) Dec 21 00:10:13
KungA
71) Dec 21 00:10:15
nthistle
72) Dec 21 00:10:17
jtbandes (AoC++)
73) Dec 21 00:10:21 
TXort
74) Dec 21 00:10:34
vincentwoo (AoC++)
75) Dec 21 00:10:37 
N Murdoch
76) Dec 21 00:10:39 
Michelle Dobbs
(AoC++)
77) Dec 21 00:10:41 
Gabriel C
78) Dec 21 00:10:42 
ryndvs96
79) Dec 21 00:10:44
leijurv (AoC++)
80) Dec 21 00:10:46 
ManyPinkHats
81) Dec 21 00:10:51
evanphoward (AoC++)
82) Dec 21 00:10:52
Olivia Kaufman (AoC++)
83) Dec 21 00:10:53
Zachary Liu
84) Dec 21 00:10:54
RZachLamberty (AoC++)
85) Dec 21 00:10:56 
Mr. Robol
(AoC++)
86) Dec 21 00:10:56
alfredxing
87) Dec 21 00:10:58 
Antonio Molina
88) Dec 21 00:10:59
Alex Curtiss
89) Dec 21 00:11:06
rHermes (AoC++)
90) Dec 21 00:11:07 
mserrano
91) Dec 21 00:11:09 VeeArr
(AoC++)
92) Dec 21 00:11:10
kevinmchung (AoC++)
93) Dec 21 00:11:10 
rhendric
94) Dec 21 00:11:14
pfg
95) Dec 21 00:11:18
ncfavier (AoC++)
96) Dec 21 00:11:19 
val tron
97) Dec 21 00:11:19 
Laurentiu Ionele
98) Dec 21 00:11:19
stristr (AoC++)
99) Dec 21 00:11:22 Nitrate_
100) Dec 21 00:11:28 
boboquack