Order by: Trending (past 30 days)Date ← Go back On 02/27/2019 06:19 am by Dr Ski | Valencia, Philippines Share Twitter Facebook Reddit LinkedIn Email Nautical twilight begins when the Sun's disc drops 6 degrees below the horizon. Best time to look for Mercury. Canon EOS M10 24mm, f6.3 1/3 sec at ISO1600 Canon DPP4 RAW converter