One thing that will be apparent from this blog is that I am interested in time and, in particular, the calendars used to mark the passage of time and mark special dates etc. There are two main types of calendar, solar and lunar (or, more typically, luni-solar). My posts will include the date in the solar and lunar calendars, and explanations of how these calendars work can be seen on the pages on Solar Calendars and Lunar Calendars. The solar dates will be shown with a yellow background and the lunar dates with a blue background at the top of each post.
I have written some pages on calendar reform: