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21 June will be the longest day of 2019 in the northern hemisphere, midsummer day. This is the day of

Across much of the world the open star cluster NGC 6530, close to the lagoon nebula (M8) in Sagittarius will

In the southern hemisphere Mercury will be well placed for observation in the evening sky, shining brightly at mag 0.4. From

Across much of the world the globular cluster NGC 6541 in Corona Australis will be well placed for observation. It

The Moon will be prominent in the dawn sky, rising at around midnight. From London, it will be visible in

The open star cluster NGC 6633 in Ophiuchus will be well placed for observation. It will reach its highest point

Across much of the world the globular cluster M22 in Sagittarius, near the Galactic centre will be well placed for

The open star cluster IC 4756 in Serpens will be well placed for observation. It will reach its highest point

The Moon will pass close to the Sun and become lost in the Sun’s glare for a few days. The

The Moon and M44 will make a close approach, passing within 0°31' of each other. The Moon will be 2