If you are trying to trace the origin of a specific clip, this filename confirms it passed through WhatsApp on March 9, 2017.
Users often find these files when restoring old phone backups from platforms like Google Drive or iCloud . General Virality Context (2017) VID 20170309 WA0010 mp4
During the period of March 2017, common "viral" WhatsApp topics included: If you are trying to trace the origin
Trends like the "Mannequin Challenge" were still being shared in various forms. VID 20170309 WA0010 mp4