17 19 71 | Snow in one of the hottest places in the world, January 7, 2018, Ain Sefra, Algeria

The date was right for 'snow.

The snow fell Sunday, January 7, 2018.

1/7/2018 = 1+7+(2+0+1+8) = 19
1/7... 7/1...

http://www.cnn.com/2018/01/09/africa/sahara-snow-trnd/?iid=ob_travel_core_homepage