I am not sure of the methodology used here as it does not say what's used.. But here's what I have read.... So there could be some relationship.
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The third basic rhythm of life, the lunar cycle, also appears in patterns of human birth times. The moon is so closely linked to birth that in some places it is even called 'the great midwife'. To test this possibility, the two doctors collected information on more than half a million births that occurred in New York hospitals between 1948 and 1957. This enormous sample showed a clear and statistically significant trend for more births to take place during the waning moon than the waxing moon, with a maximum just after the full moon and a clear minimum at new moon.
Other studies, in Germany and in California with smaller samples, have found no such relationship, but it is worth bearing in mind that lunar influences differ in different geographic locations. Tides in the Bay of Fundy rise and fall over fifty incredible feet, while the difference between low and high tide in Tahiti is only a few inches.
Eugen Jonas is the Czech psychiatrist whose interest in lunar rhythms led to the discovery of a successful natural method of birth control. In following up his work, he has hit on a new lunar correlation that makes it possible to predict the sex of a child with great accuracy.
The method is based on the moon's position in the sky at the time of conception. In classical astrology, each of the zodiac zones has a polarity, or sex - Aries is male, Taurus female, and so on. Jonas has discovered that intercourse leading to conception at a time when the moon was in a 'male' star zone produced a male child. At a clinic in Bratislava, he made the necessary calculation for eight thousand women who wanted to have boys, and 95 per cent of them were successful. When tested by a committee of gynecologists, who gave him only the time of intercourse, he was able to tell the sex of the child with 98 per cent accuracy.
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