When Does Comet C/2017 S3 (PANSTARRS) Rise and Set? Precise Rise and Set Times
Comet C/2017 S3 (PANSTARRS) is circumpolar and transits at 15:17 UTC (altitude: 85.1°)
The rise and set times are defined as the time at which the upper limb of Comet C/2017 S3 (PANSTARRS) touches the horizon, consideting the effect of the atmospheric refraction. As the atmoshpere conditions cannot be modeled precisely the times reported here should be considered correct with an approximation of few minutes.