Earth:

The Sideric Day of the Earth

 
194.71 Hz
hear or download
MP3 - 256 kBit/s -1.3MB - 42 sec.

Tone:

194.71 Hz = G
equivalent chromatical a¹ = ....437.1 Hz
the difference to 440 Hz..= ...– 11.4 cent

Tempo:

91.3 bpm

Color:

red-orange

Explanation:

Duration of the true revolution of earth around its axis.The sideric day is about 4 minutes shorter than the average calender day.

Moon:

Moon-culmination

 
187.61 Hz
hear or download
MP3 - 256 kBit/s - 1.3MB - 43 sec.

Tone:

187.61 Hz = F#
equivalent chromatical a¹ = ....446.2 Hz
the difference to 440 Hz..= ...+ 24.2 cent

Tempo:

87.9 bpm

Color:

red

Explanation:

The time span for one passage of the moon from one south to the next one. Every day, the moon rises about 50 minutes later than the preceding day. The delay adds up to one day during a (tropical) month.

Moon:

The Sideric Moon

 
227.43 Hz
hear or download
MP3 - 256 kBit/s - 1.1MB - 36 sec.

Tone:

227.43 Hz = A#
equivalent chromatical a¹ = ....429.3 Hz
the difference to 440 Hz..= ...– 42.5 cent

Tempo:

106.6 bpm

Color:

yellow (yellow)

Explanation:

The time span for one revolution of the moon around the earth, as measured against the celestial sphere. The sideric month is about two and a quarter days shorter than a synodic month.This is caused by the apparent course of the sun along the ecliptic. As the sun passes approximately one sign per month, the moon has to pass through 13 signs to "keep up with it".

Moon:

Metonic cycle

 
229.22 Hz
hear or download
MP3 - 256 kBit/s -1.1MB - 35 sec.

Tone:

229.22 Hz = A#
equivalent chromatical a¹ = ....432.7 Hz
the difference to 440 Hz..= ...– 28.9 cent

Tempo:

107.45 bpm

Color:

yellow (yellow)

Explanation:

The time span of about 19 year, after which the sun and the moon have the same aspects on the same day. The metonic cycle is the basis of combined soli-lunar calendars.

Moon:

Saros period

 

 
241.56 Hz
hear or download
MP3 - 256 kBit/s - 1MB - 34 sec.

Tone:

241.56 Hz = B
equivalent chromatical a¹ = ....430,4 Hz
the difference to 440 Hz..= ...– 38,2 cent

Tempo:

113.2 bpm

Color:

yellow-green

Explanation:

The time span of approximately 18 years and 10 days, after which eclipses of the same type repeat themselves.

Moon:

Moon knot

 
234.16 Hz
hear or download
MP3 - 256 kBit/s - 1.1MB - 35 sec.

Tone:

234.16 Hz = A#
equivalent chromatical a¹ = ....442 Hz
the difference to 440 Hz..= .....+ 8 cent

Tempo:

109.8 bpm

Color:

yellow (yellow)

Explanation:

The duration of the path of the nodes along the ecliptic, about 18,6 years. The nodes are the intersection of the orbit of the moon with the ecliptic. If the moon moves along the ecliptic from South to North, it crosses the North node, which is also called the "head of the dragon". If it moves from North to South, it crosses the South node, which is also called the "tail of the dragon".

Moon:

Apsidis rotation

 
246.04 Hz
hear or download
MP3 - 256 kBit/s - 1MB - 33 sec.

Tone:

246.04 Hz = B
equivalent chromatical a¹ = ....438,4 Hz
the difference to 440 Hz..= ....– 6,3 cent

Tempo:

115.3 bpm

Color:

yellow-green

Explanation:

The duration of the movement of one axis of the elliptical orbit of the moon around the ecliptic. The two extreme points of the bigger axis are called perigee (the point where the moon is closest to the earth) and apogee (the point where the moon is most distant from the earth). One such revolution takes about 8,85 years.