Video Broadcast: #106

Types

• Solar Calendar
• Lunar Calendar
• Luni-solar Calendar
• Civil Calendar
• Fiscal Calendar
• Academic Calendar

Sample Calendars

• Old Roman Calendar
  Ten months for official activities
  September, October, November and December are the 7th, 8th, 9th and 10th months
• Julian Calendar
  Twelve months : January to December
  Leap year correction
  if a year is divisible by 4
• Gregorian Calendar
  Refined Leap Year correction
  if a century year is divisible by 400
  
• Mayan Calendar
  
• Showa (Japan)
  Reign of Emperor

Synchronization

• Leap Year
  for solar calendars
• Intercalary Month
  for lunar calendars

Anomalies

• “October” Revolution
• Early journey where arrival date is “earlier” than the start date
• Ripley’s “Believe It Or Not” describing an Epitaph with February 30