Important Dates

This page contains important dates or occurences during the events of Percy Jackson and the Olympians and The Heroes of Olympus. If an exact date is not known, you can add just the year to the month it takes place in. Please do not add an event that does not relate to the Percy Jackson or the Heroes of Olympus series (such as the birthdays of the actors/actresses) as this page is for dates taking place within the series, not in the real world.

May

 * May 16, 1924-Nico di Angelo is born to Maria di Angelo and Hades

June

 * June 5, 1964-Rick Riordan, author of the Camp Half-Blood series, is born
 * June 5, 1976-Grover Underwood is born to possibly a sibling of Ferdinand
 * June 21- The Summer Solstice, when all the gods gather to have a meeting
 * June 21, 2005-Luke Castellan is revealed as the true Lightning Thief

August

 * August 11,2009-The Princess Andromeda sinks beneath the waves, along with several monsters and demigods including Charles Beckendorf.
 * August 17,2009-The Battle of Manhattan began
 * Micheal Yew is M.I.A
 * The city of Manhattan falls asleep due to Morpheus.
 * Silena Beauregard is killed by the Lydian drakon.
 * Some unnamed Hunters are killed in the battle (mentioned later by Artemis ).


 * August 18,1993-Perseus "Percy" Jackson born to Sally Jackson and Poseidon
 * August 18, 2009-The Second Olympian War ends.
 * Titan Army loses the Second Olympian War.
 * Kronos's scythe, a.k.a Backbiter, is destroyed by the Olympian Goddess Hestia.
 * The Titan Lord Kronos is dissolved too much to, hopefully, ever reform.
 * Luke Castellan, stabbed himself to destroy Lord Kronos.
 * Percy and his Greek Demigod forces sucessfully fended off the Titan Army from Manhatten and Mount Olympus.
 * Jason and his Roman Demigod forces destroy the Titan base at Mount Othrys, with Jason defeating Krios by himself.
 * Hades and his Undead Army sucessfully defended the Empire State Building from the remaining Titan Forces.
 * Poseidon and his Aquatic Army help defeat Typhon.
 * Rachel Elizabeth Dare is made the new Oracle after the curse is lifted by Hades
 * Perseus "Percy" Jackson makes the Olympians swear on the River Styx to claim their children by the age of 13, to give Hades and the minor gods thrones and cabins at Camp Half-Blood, and never to make any more vows involving having any more children.

October
October 19, 1993- Annabeth Chase is born to Fredrick Chase and Athena.

November

 * November 2009-Zeus recalled all the Gods back and closed Olympus and forbid all contact to their children and mortals.

December

 * December 13,2010-Percy Jackson goes missing
 * December 15, 2007
 * Thalia, Percy, and Annabeth meet up with Grover who has been tracking two deemigods; Nico and Bianca
 * Annabeth is captured by Dr. Thorn


 * December 16, 2010-Jason Grace, Piper McLean, and Leo Valdez go to Camp Half-Blood and the second Great Prophecy started
 * December 17,2010-Jason Grace,Leo Valdez and Piper McLean begin thier Quest to save Hera


 * December 19,2007-Bianca di Angelo is killed when she destroyed Talos in the Junkyard of the Gods in The Titan's Curse
 * December 21-Day of the Winter Solstice, when all the gods including Hades gather at Mount Olympus
 * December 21,2007
 * Luke Castellan has a fall that would've killed him if he didn't bear the Curse of Achilles if he wants to be the body to possess Kronos, Titan Lord of Time.
 * Percy, Grover, Thalia, and Zoe rescue Artemis, goddess of the hunt and the moon, and Annabeth from Dr. Thorn, a manticore in The Titan's Curse.
 * Zoe Nightshade is killed from both the poison of Ladon and the blow from her father while fighting her father on Mount Orthys, the Titan base in The Titan's Curse.
 * A new constelation is formed by Artemis from the body of Zoe Nightshade, known as 'the Huntress'.
 * December 21,2010
 * Jason, Piper and Leo rescue Hera from Gaia.
 * Porphyrion is ressurected from Tartarus at the Wolf House.
 * The Second Giants War Begins
 * December 22, 1988-Thalia Grace is born to Ms. Grace and Zeus