WATCH OUT How to see Mercury in the night sky – the tiny planet will be visible after sunset this month Charlotte Edwards, Digital Technology and Science Reporter May 3 2021, 12:22 ET MAY is a great month to spot the tiny planet Mercury in the sky. All you'll need is some binoculars or a telescope and to be in the right spot after sunset. 2 That includes stargazers in the UK and the US. You'll need to look west-northwest around 30 minutes after sunset. A great date to do this is on May 13 because Mercury will be around for 135 minutes after sunset. 2 Look for Mercury 30 minutes after sunsetCredit: Getty