278 participants were checked in at midnight UTC on 25/12.
Seeding random number generator with 25/12's first random number from @dailyrandomnums on Twitter :7429

Today's random numbers: 7429 0602 3441 6929 8762 1696 2939 0939 3920; today's random dice rolls: 4 6 4 3 1 5 1 4 4

— Daily Random Numbers (@dailyrandomnums) December 25, 2019

Formula, for the nerds
$twitterseed = 7429//manually inserted from Twitter
srand($twitterseed);//seeding the random number generator
$rand1=rand(1, $count);//choosing a random integer in the pool
$rand2=rand(1, $count);//choosing a random integer in the pool
$rand3=rand(1, $count);//choosing a random integer in the pool

Picking first number between 1 and 278 : 242. The winner of the Naviter Hyper instrument is : Joanna Di Grigoli (VE)
Picking second number between 1 and 278 : 135. The winner of the Airtribune hat is : Richard Meek (GB)
Picking second third between 1 and 278 : 31. The winner of the Naviter slippers is: Daniel Blanco (ES)
  1. Gadi Wolff
  2. Nora Martiny
  3. Cristian-Antoniu Balan
  4. Ronald Stegeman
  5. Piero Gavinelli
  6. Tomaz Bavdaz
  7. Andrej Sokolic
  8. Vit Pekarek
  9. Sergei Biriukov
  10. Huseyin Tanriverdi
  11. Chris Lee
  12. Nick Jones
  13. Emil Cervenan
  14. Joanna Kocot
  15. Richard Chambers
  16. Tommy Nilsson-Hedman
  17. Evaldas Ziaunys
  18. Artur Pietrek
  19. Gael Lafond
  20. Bahadir Aksoy
  21. Christoph Froning
  22. Daniel Tyrkas
  23. Brian Greenwell
  24. Marek Kwasecki
  25. Martin Petz
  26. Dmitry Kalita
  27. Tim Schober
  28. Olesia Sokolova
  29. Rafal Reinert
  30. Michal Sneiberg
  31. Daniel Blanco
  32. Pavel Titov
  33. Darko Potocki-Profa
  34. Alex Boiko
  35. Tobias Schaedel
  36. Jan Å etina
  37. Yann Kaliszczak
  38. Vitaliy Miroshnik
  39. Ilias Kleidaras
  40. Nigel Lane
  41. Rob Favie
  42. Oliver Keller
  43. Hans Peter Mululu
  44. Nick Webster
  45. Dominik Kapica
  46. Donatas Adzgauskas
  47. Michal Adamczuk
  48. Wim Meeusen
  49. Martin Janosik
  50. Michal Briestansky
  51. Rhys Akers
  52. Mark Dickson
  53. Konstantin Grebenshchikov
  54. Kuba Sto
  55. Jerry Furnell
  56. Marcel Monaghan
  57. Stefan Dzugovski
  58. Melanie Heather
  59. Istvan Gyarmati-Szabo
  60. Simon Sudermann
  61. Mia Zupancic
  62. Vladislav Kuzin
  63. Uğur Türköz
  64. Arild Arnesen
  65. Istvan Pal
  66. Daniel Stefan
  67. LGK Peeters
  68. Mindaugas Morkunas
  69. Florin Iftinca
  70. Csóka Róbert
  71. Eric Trapp
  72. Kieran Campbell
  73. Mykola Rykov
  74. Chris Bowden
  75. Francesca Milasi
  76. Bruce Zaayman
  77. Benedikt Haverkamp
  78. Väinö Weckström
  79. Patrick Royer
  80. Stefanie Herminjard
  81. Grigory Pavlenko
  82. Samuel Milani
  83. Benjamin Kovco
  84. Karlien Engelen
  85. Spas Ilievski
  86. Vladimira Hristozova
  87. Aleksandr Dobrohhotov
  88. Juan Gonzalez
  89. Becker Udo
  90. Ilya Shashin
  91. Dario Marini
  92. Tony Winters
  93. Peter Louis Gade
  94. Joan Luk Yin Ying
  95. Lukasz Piasecki
  96. Remko Bolt
  97. Douglas Hale
  98. Nikolay Lipko
  99. Miguel Villarta
  100. Pak Shing,Tony HO
  101. Johan Van Brussel
  102. Antoine Doumenc
  103. Anton Antonov
  104. Marius Gherghita
  105. Matteo Passet
  106. Pal Tarpataki
  107. Tavo Gutierrez
  108. Ross Mason
  109. Tamas Domokos
  110. Qun Zhao
  111. Markus Anders
  112. Mykola Tiutiunnyk
  113. Chris Williams
  114. Vanja Eggesvik
  115. Terje Hansen
  116. Beth Sillince
  117. Olesia Kosilova
  118. Georgi Jordnov
  119. Eugenio Gambari
  120. Brian Doub
  121. Traian Dimitriu
  122. Pas Cal
  123. Walter Bunsen
  124. Ben Wyatt
  125. Marcella Uchoa
  126. Mircea Saracu
  127. Nida Gursoy
  128. Oriol Cervello
  129. Jan Rentowski
  130. Costea Cosmin
  131. Rick Hawkeswood
  132. Alan McNab
  133. Jing Xiao Cen
  134. Iwan van Staveren
  135. Richard Meek
  136. Susanne Schuchardt
  137. Carlos Reguera
  138. Carel Luebbig
  139. Miklos Turan
  140. Ursache vasilica
  141. Terje Kristoffersen
  142. Aleksei Vagin
  143. Serdar Tur
  144. Magnus Olsson
  145. Giulia Goeller
  146. Sergey Lazarev-Marchenko
  147. Grzegorz Dudka
  148. Anna Gerasimova
  149. Charalampos Kakias
  150. Iarly Selbir
  151. Nguyen Viet Ha
  152. Ludmila Zalik
  153. Ken Beach
  154. Benjamin van Dijk
  155. Nikolay Merkin
  156. Albino Malli
  157. Dimitar Hadzhimarinov
  158. David Fasseu
  159. Nathanael Majoros
  160. Mark Bourbonnais
  161. Giuseppe (Pino) Simone
  162. Nuno Virgilio
  163. Mark McIntyre
  164. Anton Ze
  165. Danni Capelin
  166. Gabor Bors
  167. Simone Plances
  168. Bora Alpay
  169. Ding-Chun Lin 林鼎淳
  170. Ivica Huljek
  171. Ake Kindblad
  172. Ragna Breines
  173. Liz Dengler
  174. Luca Mammucari
  175. Ian McHardy
  176. Tuan Dung Vu
  177. Marek Janosik
  178. Jesus Muelas
  179. Boris Staehly
  180. Slawek Kedziak
  181. Quentin Debras
  182. Bengt Pettersson
  183. Tomas Drnec
  184. Andrew Read
  185. Valery Vinokurov
  186. Mykyta Sokolov
  187. Antoine Patte
  188. Cenay Meder
  189. Johann Gorlier
  190. Aleksei Riabtsev
  191. Zhivko Atanasov
  192. Dmytro Pavliuchenko
  193. Sergii Pavliuchenko
  194. Francois de Neuville
  195. Aleksandr Popov
  196. Umut Aslan
  197. Peter Bienek
  198. Richard lovelace
  199. Lai Wan Sylvian Wong
  200. Per-Inge Norang
  201. Shane Morton
  202. Romana Schubertova
  203. Theodoros Anagnos
  204. Balazs Glowacz
  205. Maxime Bellemin
  206. James Haskins
  207. Alex Chapman
  208. Hakan Lindqvist
  209. Juraj Jezo
  210. Miha Vovk
  211. Przemyslaw Potocki
  212. Samuel Nodet
  213. Reiner Braun
  214. Marko Kozic
  215. Aleksandr Levashov
  216. Sonja Perglerova
  217. Jonathan Greenwood
  218. Ilya Rezyapkin
  219. Josip Osmann
  220. Rosanne Vaneeckhaute
  221. Pierre Laurens
  222. Alberto Plans
  223. Marius George Tanasoiu
  224. Lies Coddens
  225. Jiri Dlask
  226. Flavius Fultman
  227. Endre Kotta
  228. Dominique Nelis
  229. Tim Pilling
  230. Paulius Jonaitis
  231. Dmitry Makarov
  232. Maud Bidaud
  233. Dmitriy Ogay
  234. Joerg Ewald
  235. Alexey Misyagin
  236. Georg Grieshofer
  237. Gabriel Seraphim
  238. Aleksandr Korabelnikov
  239. Hakan Akcalar
  240. Peter Wais
  241. Uwe Tillmann
  242. Joanna Di Grigoli
  243. Yingyi Chen
  244. Gary Wirdnam
  245. Michal Grabos
  246. Martijn Van Dijk
  247. Anna Hadders
  248. Steven Montfoort
  249. Manfred Marte
  250. Denis Buckley
  251. Jeff Thielemans
  252. Zoltan Szaloki
  253. Artem Tarasov
  254. Dan Vallieres
  255. Marina Olexina
  256. Will Yang
  257. Will Ramsey
  258. John Herman Sørheim
  259. Lode Spruyt
  260. Gregori Gerebtzoff
  261. Bert Adams
  262. Inja Sporer
  263. Zvonimir Vlah
  264. Sander de Lepper
  265. Rick Brown
  266. Sergiu Enea
  267. Anton Gurin
  268. Luis Martinez Iturbe
  269. Dejan Mihelcic
  270. Željko Kumer
  271. Stefan Adam
  272. Ante Grgasović
  273. Pavel Marcinek
  274. Lee Overton
  275. Keith Owen
  276. Fabian Andre
  277. Dmytro Gordieiev
  278. David Hanning
Saving the situation as it was at 10AM