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Have you ever read your horoscope and wondered how it was calculated? The zodiac as we all know it divides the ecliptic of the Sun into twelve sections, marked by constellations that we know as the zodiac signs. But an alternative zodiac developed out of the encounter of the Indian, Bedouin and Islamic traditions. The lunar mansions divided the ecliptic according to the sidereal revolution of the Moon around the Earth, instead of considering the Sun. This alternative zodiac was made of 27 or 28 sections, each marked by small star clusters. Lunar mansions, like the solar zodiac, were employed not only for timekeeping purposes, but also for weather forecasting and astrological prediction.

For this final session we will meet attendees in front of the Warburg Institute, Woburn Square, London WC1H 0AB at 5.00pm and will take Bus 168 from Tavistock Square to Hampstead Heath Overground station (South End Green Stop). 

For those who cannot join us at the Institute, we will be meeting at Hampstead Heath Overground Station, South End Road, London NW3 2QD at 6.00pm. We will walk to Parliament Hill to try and observe some of the mansions. We will then warm up with a drink at The Magdala Tavern, 2A South Hill Park, NW3 2SB!

Please wrap up warm and bring a torch – and a pair of binoculars if you have one. Everyone is welcome, even if they did not attend the previous sessions.

For those who cannot be with us but would like to observe the lunar mansions from home, we will attempt to observe the four mansions in the document attached below. Participants are encouraged to use Stellarium ( and the lunar mansions database (

Participants from all backgrounds are welcome. Knowledge of Arabic and/or Latin is useful, but not necessary – all participants are encouraged to take part in the open discussion.

Organisers: Arianna dalla Costa and Beatrice Bottomley (Warburg Institute) 

Please register if you either wish to attend in person or observe from home.

Lunar Mansions to observe at home PDF 122.34 KB