Seventeen years after the completion of the historical astronomical "Trilogy of Time" Ulysse Nardin has developed another revolutionary astronomical timepiece with the distinct DNA of Dr. Ludwig Oechslin. Dr. Ludwig Oechslin’s concept focused on the system of Sun, Earth and Moon, concentrating on the scientifically accurate depiction of the moon phase, and the global influence of lunar and solar gravitation, resulting in the ebb and flow of the tides.