Different Moon names

Moon months

Our months are linked to the movements of the moon. The moon passes between the earth and the sun every 29½ days - then there is a new moon. In Jewish and Muslim calendars a new month begins - all the months have 29 or 30 days.

Honey Moon
The June full moon was called the Mead or Honey moon. The name derives from the hives being full of honey at this time of the year. The honey would have been fermented and made into mead. Traditionally, a honey drink was taken after wedding ceremonies held on the Summer Solstice. This is the derivation of 'honeymoon'.

Blue Moon
Due to the moon's cycle being 29½ days, there are occasionally - as in July 2004 - two full moons in one month (only happens on average every 2.7 years). Then the second moon of the month is called a 'blue moon'.
The next blue moon will be in June 2007. There will be two blue moons in 2018.

Dark Moon

When two new moons occur in a month, the second is called a
'dark moon'.
The new moon is also sometimes called the dark moon - at this phase there is no illumination on the earth's side.

Harvest Moon

The full moon nearest to the Autumn Equinox is called the 'Harvest moon'. This is because for several nights it appears large and bright in the early evening, bringing farmers valuable extra time to gather in their harvest.
The Celtic year was once divided into 13 months - one for each moon occuring during the year.

I am abit confused with the 2 moons in a month thing, is the 2nd a blue moon or a dark moon?