Young Crescent Moon setting at 6.17 pm.
On Friday evening clear visibility and a cloudless sky promised to provide a perfect view of the Young Crescent Moon (only 18 hours old) setting below the local horizon to the north of Christmas Pass. However sunset at a quarter past five was followed by the development of a large sunset stratospheric aerosol twilight arch which was so bright that it prevented the thin young Moon from becoming clearly visible to the naked eye for almost three quarters of an hour. This left only twenty minutes to watch it setting as shown in the accompanying mosaic.

Tripod-mounted Panasonic Lumix DMC-TZ60 in manual mode with x40 zoom magnification

Photoshop Elements 15 - crop and register four images to produce mosaic.