Leap Year Tidbits

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Across
  1. 4. This ship sank in a leap year
  2. 7. Which calendar with leap year once every four years was proposed in 46 BC
  3. 8. This calendar has an extra day added to the last month of the year every four years
Down
  1. 1. Gold was discovered here in a leap year
  2. 2. Leap year babies are called as?
  3. 3. This western calendar modified the leap year rules which is used till present day
  4. 5. This twin cities are the self proclaimed Leap Year capital of the world.
  5. 6. Which calendar apart from the Hindu calendar, has a leap month added after every few years