May 4, 2021: Three planets are visible after sunset. Brilliant Venus is low in the west-northwest after sundown. Mercury is above Venus. It is visible lower as the sky darkens. As night falls, Mars is over a third of the way up in the west, under Castor and Pollux, the Gemini Twins.
This episode is also available as a blog post: https://whenthecurveslineup.com/2021/04/27/2021-may-4-brilliant-evening-star-venus-mercury-mars/