Explore the fascinating history of timekeeping and navigation in this comprehensive lecture by William J. H. Andrewes, a renowned Sundial Architect and Horological Consultant. Delve into the intricate relationship between latitude, longitude, and timekeeping methods, including the lunar distance and time keeper approaches. Discover the impact of Galileo's telescope and the development of timekeeping devices in France. Learn about the challenges faced by seafarers, including shipwrecks and navigating treacherous waters like Cape Horn. Examine the evolution of timekeeping mechanisms, from pendulums and observatories to balance springs, with a focus on improving accuracy and precision. Explore the groundbreaking work of John Harrison and his circular error solution, as well as the contributions of other horological pioneers like George Graham. Follow the development of Harrison's timekeepers, from the H1 clock to the pocket watch, and understand the role of government in this process. Gain insights into William H. Andrewes' own experiences and the legacy of Harrison's work, including George Daniels' modern interpretations. Conclude with a look at the Harrison Exhibition and the recognition of these horological achievements through Royal Observatory medals. Read more