Today’s date1 is Coptic Date Reinventing the Wheel of Time In today’s post, we are going to explore the modern day Coptic/Ethiopic calendar. In use both by the Coptic Orthodox Church and as the Civil Calendar of Ethiopia, the only difference between the two calendars is the names of the months and the epoch of the years. Historically this system has also been known as the Egyptian Civil Calendar and the French Revolutionary Calendar....
Preface Before I start writing several blog posts about calendars, I feel I should preface this blog post by specifying why I’m writing about them in the first place. The end goal of this series is going to be several Android and Android Wear apps implementing various calendar features in different calendar systems. In particular, I want to implement smart complications1 for some of these features. Those with an interest in horology will already be aware that the perpetual calendar is a rare and sought-after complication in mechanical watches....