This is the fourth century in this challenge; it follows continuously from the first three, making a total of 400 consecutive days. As before, in keeping with the strictest interpretation of the rules, each article was composed in the twenty-four hours before its posting—and in honor of Spiritia, who made the original challenge, the article posted on the hundredth day treated a topic relating to Bulgaria.

Coding of columns in the sortable table:

  • No. = serial number of the day, with letters added for multiple articles added in one day.
  • # = serial number of the article.
  • Dies = date, given as ymd.
  • D = basic number of the topic in Dewey Decimal Classification.
  • Pagina = lemma in commentario definitum (the lemma defined in the article).
  • = una e 10 000 paginis maximi momenti (one of the 10,000 pages of greatest importance).
  • ± = commentarius ab alio factus, omnino retractatus (commentary begun by someone else but entirely revised, always by more than doubling—often by more than quadrupling—the number of bytes).
  • Octeti = raw number of added bytes; it's not multiplied by the factors used for comparing the wikipedias on the 1000-word and 10,000-word lists at Meta (1.10 and 1.07, respectively).
No. # Dies D Pagina ± Octeti
1a 1 20200428 595 Cimex lectularius 5404
1b 2 20200428 595 Diptera ± 7094
2 3 20200429 595 Gerridae 8091
3a 4 20200430 595 Amphiesmenoptera 3575
3b 5 20200430 595 Aquarius 2785
3c 6 20200430 595 Aquarius najas 2998
3d 7 20200430 595 Aquarius remigis 6170
3e 8 20200430 595 Gerrinae 880
3f 9 20200430 595 Gerrini 1142
3g 10 20200430 595 Gerris 3763
3h 11 20200430 595 Gerris lacustris 1547
3i 12 20200430 595 Gerroidea 2092
3j 13 20200430 595 Gerromorpha 2928
3k 14 20200430 595 Limnogonus 3501
3l 15 20200430 595 Neogerris 2825
3m 16 20200430 595 Tachygerrini 1817
3n 17 20200430 595 Tachygerris 1507
3o 18 20200430 595 Tenagogonus 1547
3p 19 20200430 595 Sphingidae 8742
4 20 20200501 595 Zygoptera 9477
5a 21 20200502 595 Anisoptera 8807
5b 22 20200502 595 Austrolestes 4502
5c 23 20200502 595 Austrolestes io 3587
5d 24 20200502 595 Austrolestes leda 3838
5e 25 20200502 595 Lestes sigma 2607
6a 26 20200503 595 Camacinia 3577
6b 27 20200503 595 Camacinia othello 3087
6c 28 20200503 595 Lestes 9242
6d 29 20200503 595 Lestes vigilax 1619
6e 30 20200503 595 Tettigoniidae 6029
6f 31 20200503 595 Trithemis hecate 1897
7a 32 20200504 595 Aglaothorax 3642
7b 33 20200504 595 Gryllotalpidae 10340
7c 34 20200504 595 Tettigoniinae 10825
8a 35 20200505 595 Caelifera 9435
8b 36 20200505 595 Trigonidiidae 1273
9a 37 20200506 595 Amphipoda 7861
9b 38 20200506 595 Hyperia 1577
9c 39 20200506 595 Hyperia galba 2848
9d 40 20200506 595 Hyperiidae 1573
9e 41 20200506 595 Hyperiidea 2758
9f 42 20200506 595 Phronimidae 1162
10 43 20200507 597 Electrophorus electricus 8826
11 44 20200508 597 Lophiiformes 8923
12a 45 20200509 597 Torpediniformes 3932
12b 46 20200509 597 Antennariidae 3989
12c 47 20200509 597 Antennarius 6093
12d 48 20200509 597 Antennarius striatus 3581
13a 49 20200510 597 Torpedinidae 5277
13b 50 20200510 597 Mugilidae 10910
14 51 20200511 597 Piranha 7954
15 52 20200512 597 Acipenseridae 17332
16a 53 20200513 597 Engraulidae 10695
16b 54 20200513 597 Engraulis 2811
17a 55 20200514 597 Abramis brama 5551
17b 56 20200514 597 Betta 11822
17c 57 20200514 597 Betta pulchra 2022
17d 58 20200514 597 Macropodusinae 4011
18a 59 20200515 597 Carassius 3640
18b 60 20200515 597 Cyprininae 2338
18c 61 20200515 597 Lavinia 1888
18d 62 20200515 597 Leuciscinae 3239
18e 63 20200515 597 Pelasgus 2093
18f 64 20200515 597 Pelasgus laconicus 1620
19a 65 20200516 597 Cyprinus 5899
19b 66 20200516 597 Cyprinus carpio 7744
20 67 20200517 597 Carassius auratus 7956
21a 68 20200518 597 Ctenopharyngodon idella 7614
21b 69 20200518 597 Squaliobarbinae 6364
22 70 20200519 597 Tinca tinca 5385
23 71 20200520 597 Gadiformes 12074
24a 72 20200521 597 Lota lota 8924
24b 73 20200521 597 Lotidae 3743
24c 74 20200521 597 Molva 1710
25a 75 20200522 597 Gadidae 3881
25b 76 20200522 597 Melanogrammus aeglefinus 8812
26a 77 20200523 597 Akihito 1981
26b 78 20200523 597 Gobiidae 16329
26c 79 20200523 597 Zappa confluentus 2208
27a 80 20200524 597 Dicentrarchus 2165
27b 81 20200524 597 Dicentrarchus labrax 9981
28 82 20200525 597 Pleuronectiformes 11172
29 83 20200526 597 Sphyrnidae 8193
30 84 20200527 597 Galeocerdo cuvier 8799
31 85 20200528 597 Silurus glanis 8276
32 86 20200529 597 Tetraodontidae 11834
33 87 20200530 567 Placodermi 11778
34a 88 20200531 567 Ctenidium 1876
34b 89 20200531 591 Branchiae 8106
34c 90 20200531 597 Oxudercinae 3996
35 91 20200601 598 Pteroclididae 7592
36a 92 20200602 568 Linxiavis inaquosus 1619
36b 93 20200602 598 Tinamidae 22249
37 94 20200603 598 Cathartidae 14843
38 95 20200604 598 Pandion haliaetus 6803
39 96 20200605 598 Charadriiformes 18459
40a 97 20200606 598 Alcidae 9816
40b 98 20200606 598 Pinguinus impennis 6658
41 99 20200607 598 Laridae 10218
42 100 20200608 598 Sterninae 15562
43 101 20200609 598 Turnicidae 4306
44 102 20200610 598 Stercorarius 4939
45 103 20200611 598 Scolopacidae 5256
46 104 20200612 598 Apodidae 3247
47 105 20200613 598 Sagittarius serpentarius 9055
48 106 20200614 598 Cuculidae 11566
49 107 20200615 598 Phasianus colchicus 8958
50 108 20200616 598 Caprimulgiformes 3939
51a 109 20200617 598 Caprimulgidae 7792
51b 110 20200617 598 Caprimulgus madagascariensis 1382
52a 111 20200618 598 Coturnix coturnix 5254
52b 112 20200618 642 Epulum ± 1681
53 113 20200619 598 Tetraoninae 5839
54 114 20200620 598 Numididae 5052
55a 115 20200621 595 Pachyta 2597
55b 116 20200621 595 Pachyta lamed 2315
55c 117 20200621 598 Meleagris 4461
56a 118 20200622 595 Cerambyx 1833
56b 119 20200622 595 Semanotus 1497
56c 120 20200622 598 Musophagidae 8949
57a 121 20200623 595 Butherium erythropus 1648
57b 122 20200623 598 Opisthocomus hoazin 8098
58a 123 20200624 595 Cicindelinae 11967
58b 124 20200624 598 Paradisaeidae 7992
59 125 20200625 598 Laniidae 7664
60 126 20200626 598 Pycnonotidae 6917
61a 127 20200627 595 Meloidae 7236
61b 128 20200627 598 Cyanistes 3684
61c 129 20200627 598 Fringillidae 10383
61d 130 20200627 598 Paridae 8409
61e 131 20200627 598 Spizixos 1134
61f 132 20200627 598 Spizixos semitorques 2811
62 133 20200628 598 Motacillidae 8915
63 134 20200629 598 Sittidae 9835
64a 135 20200630 598 Certhioidea 2431
64b 136 20200630 598 Troglodytidae 10215
65a 137 20200701 394 Dies asteroidum ± 2722
65b 138 20200701 598 Sturnidae 8779
66a 139 20200702 598 Neocichla gutturalis 1799
66b 140 20200702 598 Passeridae 8280[1]
67 141 20200703 598 Emberiza 9561
68 142 20200704 598 Nectariniidae 5117
69a 143 20200705 598 Arachnothera 5461
69b 144 20200705 598 Arachnothera crassirostris 1900
69c 145 20200705 598 Arachnothera flavigaster 1754
69d 146 20200705 598 Arachnothera juliae 2286
69e 147 20200705 598 Chalcoparia singalensis 2167
69f 148 20200705 598 Hirundinidae ± 8878
70 149 20200706 598 Alaudidae 10538
71 150 20200707 598 Sulidae 14380
72 151 20200708 598 Phalacrocorax 5264
73 152 20200709 598 Balaenicipitidae 1755
74 153 20200709 598 Balaeniceps rex 5760
75 154 20200710 598 Fregatidae 8331
76a 155 20200711 595 Archeocrypticidae 2399
76b 156 20200711 597 Diodon eydouxii 939
76c 157 20200711 597 Lampanyctus 4194
76d 158 20200711 597 Lampanyctus nobilis 2446
76e 159 20200711 598 Indicatoridae 4031
76f 160 20200711 598 Protodiscus regulus 3034
76g 161 20200711 598 Protodiscus zambesiae 2514
77a 162 20200712 598 Pampusana 3596
77b 163 20200712 598 Pampusana beccarii 2869
77c 164 20200712 598 Pampusana stairi 2714
77d 165 20200712 598 Ramphastidae 6064
78a 166 20200713 598 Ramphastos 7890
78b 167 20200713 598 Ramphastos citreolaemus 3376
78c 168 20200713 598 Picidae 10422
79a 169 20200714 598 Hemicircus 3246
79b 170 20200714 598 Procellariidae 5105
80 171 20200715 598 Hydrobatidae 8374
81a 172 20200716 598 Casuarius 12081
81b 173 20200716 598 Hydrobatinae 2501
81c 174 20200716 598 Oceanodroma matsudairae 1771
81d 175 20200716 598 Oceanodroma socorroensis 1684
82 176 20200717 598 Dromaius novaehollandiae 10175
83 177 20200718 598 Apteryx 8378
84 178 20200719 568 Dinornithiformes 22406
85 179 20200720 598 Rhea 8932
86 180 20200721 598 Bubo bubo 8220
87a 181 20200722 598 Harpactes duvaucelii 1836
87b 182 20200722 598 Trogoniformes 11791
88 183 20200723 598 Phaethontidae 10569
89a 184 20200724 598 Harpactes whiteheadi 2163
89b 185 20200724 598 Knipolegus cyanirostris 2011
89c 186 20200724 598 Knipolegus lophotes 1407
89d 187 20200724 598 Satrapa icterophrys 2186
89e 188 20200724 598 Trogon comptus 1255
89f 189 20200724 598 Trogon surrucura 2398
89g 190 20200724 599 Microchiroptera 7795
90a 191 20200725 598 Bucanetes 2225
90b 192 20200725 598 Callacanthis burtoni 2233
90c 193 20200725 598 Carduelinae 8242
90d 194 20200725 599 Desmodontinae 8485
91 195 20200726 599 Erinaceinae 5437
92 196 20200727 599 Bison bison 13876
93a 197 20200728 598 Drepanidini 15196
93b 198 20200728 599 Capra (genus) 9435
94 199 20200729 599 Bos gaurus 8134
95 200 20200730 599 Ovibos moschatus 8693
96 201 20200731 599 Bubalus bubalis 9843
97a 202 20200801 599 Bovinae 5443
97b 203 20200801 599 Connochaetes 4080
98 204 20200802 599 Bison bonasus 10314
99 205 20200803 599 Lama guanicoe 5328
100 206 20200804 949 Bulgaria Rhaensis 11583
  1. Unus annus hodie completus, quia tota series die 3 Iulii 2019 coepit.