The Diary of Phenomena for the entire year is presented below in iCalendar format. To use, right-click the link below and save it to your computer. You will then be able to import it into any program that understands the iCalendar 2.0 format, such as iCal, Outlook, Google Calender, etc.asao_diary17.ics
Editions of the The Astronomical Almanac contain a list of errata identified from earlier editions. Presented here are all errata found in each volume from 2001 to the present.