The Calendar

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Across
  1. 2. This nation first developed the solar calendar.
  2. 4. Benjamin Banneker published one of these, and it included a calendar and astronomical information.
  3. 5. This happens every 4 years when an additional day is added to February
  4. 10. The timing of this Christian holiday was important in reforming the calendar.
  5. 12. The Egyptian introduced Julius Caesar to the solar calendar.
  6. 13. A ________ month has 29.5 days.
Down
  1. 1. January and _________ were added to the calendar by Numa Pompilius
  2. 3. The calendar created by Julius Caesar.
  3. 6. The month named after Julius Caesar's son, Augustus
  4. 7. This ancient Greek astronomer and mathematician harmonized the lunar and solar calendars.
  5. 8. The calendar made from Pope Gregory XIII's reforms.
  6. 9. This month was named in honor of Julius Caesar
  7. 11. The Egyptians' new year began with the heliacal rising of this star.