there is an observation + request on German NLC-Forum concerning 2018-01-09/10.
Observation is from Rio Grande, Tierra del Fuego, Argentina (53.8S, 67.8E). Detected via LIDAR in zenith from after until before sunset! In the morning visible in the AllSkyCam, too, with wave structures.
Further observations from southern hemisphere welcome!
Anyone who knows one with original images? Argentina? New Zealand? ...?