Our speaker, Steve Tonkin, has been an amateur astronomer since childhood and now spends most of his time doing astronomical outreach. He has taught astronomy to adults and children for over 30 years and has authored many articles and several books on practical aspects of astronomy. He writes equipment reviews and a monthly Binocular Tour for Sky at Night magazine. Steve is a Fellow of the Royal Astronomical Society

Although it seems almost natural, time measurement is man made and has always been a facet of astronomy. The phases in the development of the Gregorian calendar most of us use today make a fascinating story which blends science, history, sociology, religion and psychology.

centreTalks are a fund raising activity of Bourne End (Bucks) Community Association.