This weekend, on Easter Saturday (31st April), the UK will get to observe 2018's second blue moon.
A blue moon is the second full moon to occur in a calendar month. In March, we saw one on the 2nd. A double blue moon, as you might imagine, occurs when there are two blue moons in the same year and, as we saw a blue moon in January, this weekend will be part two.
It is thought to be the last blue moon until 2020, so take your chance to see it!
Blue moons, like all astronomical spectacles, come with a range of historical superstitions and mythical interpretations.
Here are a selection of superstitions that moongazers may want to be aware of for the Easter blue moon ahead, according to …
1. You should close your bedroom curtains
It was once believed that if any rays of light from the blue moon fall onto your body as you sleep you will become insane.
2. Bad luck glass
According to old myths, looking at a blue moon through any type of glass will give you bad luck for 30 days – this even includes looking through spectacles. So if you're a little superstitious, you may want to leave your reading glasses off on Saturday night.
3. You will achieve your goals
If you've got some goals that you would like to achieve this year, then start planning them under the blue moon. According to myth, you will be successful with your endeavours soon after.
4. Pick flowers to enhance your beauty
As the moon sits plump and round in the night sky, why not go for a moonlit stroll and pick some flowers and gather berries? This is thought to bring beauty to the wanderer.
5. Find love
It is believed in many cultures that you have a better chance of falling in love during a blue moon. If you've had your eye on anyone, Saturday night may be the time to arrange that date.
6. Watch out for betrayal
Apparently, the name 'blue moon' is derived from the old word for blue: 'belewe'. This means 'to betray' so be careful of betrayal on Easter Saturday.