Mercury is at its greatest angular distance from the Sun on the morning of July 30th. At 9:39 am the planet will be 20° west of the Sun. At this time of the morning Mercury won’t be visible to us here in the UK. For us, the best time to observe Mercury will be around 4:20am. Mercury will be very low so you will need a good clear horizon to the NE. The picture below gives you an idea of what to look for:
Mercury Greatest Elongation July 30th
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