|February 27, 2012||March 2, 2012|
|December 18, 2012||January 14, 2013|
|December 13, 2013||January 13, 2014|
|December 18, 2014||January 19, 2015|
|December 10, 2015||January 19, 2016|
|February 26, 2016||March 2, 2016|
|December 15, 2016||January 25, 2017|
|Bold = Bring 'Em Back Event Dates|
|Affiliated Dragon: Leap Year Dragon|
- The Astrolabe does NOT increase your chances of breeding a Leap Year Dragon.
- As of February 29, 2012, the Astrolabe had a light glow added to it to reflect the extra day of the month.
- Initially, the Astrolabe was available at level 7, but the level availability changed on an unknown date to level 11.
- The Astrolabe's description mentions, "Dalfgan". It becomes Gandalf when rearranged/ syllables/ swapped which is likely a reference to a wizard from The Lord of the Rings series.