Important Dates

This page contains important dates or occurrences 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.

June

 * June 5, 1964 - Rick Riordan, author of the Camp Half-Blood series, is born.+
 * June 5, 1976 - Grover Underwood is born, the nephew of Ferdinand
 * June 14, 2005 - Perseus Jackson meets Lord Ares, God of War.
 * June 21- The Summer Solstice, when all the gods gather to have a meeting
 * June 24- The Feast of Fortuna, how Camp Jupiter's luck will be the rest of the year.

July

 * July 4th - Fireworks on the beach at Camp Half-Blood (Greek).

August

 * August 11, 2009-The Princess Andromeda sinks beneath the waves, along with several monsters and demigods including Charles Beckendorf.
 * Percy hears the first Great Prophecy.
 * August 17, 2009-The Battle of Manhattan began.
 * Micheal Yew is M.I.A
 * The city of Manhattan falls asleep due to the Morpheus Enchantment.
 * Silena Beauregard is killed by the Lydian drakon.
 * Clarisse La Rue acheives the blessing of Ares.


 * August 18,1993-Perseus "Percy" Jackson is born to Sally Jackson and Poseidon.
 * August 18, 2009-The Second Olympian War ends.
 * Titan Army loses the Second Olympian War.
 * Kronos' 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 Greek Demigod forces successfully fend off the Titan Army from Manhattan and Mount Olympus.
 * Jason and Roman Demigod forces destroy the Titan base at Mount Othrys, with Jason defeating Krios with his own hands.
 * Hades and his Undead Army successfully 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.
 * Percy Jackson makes the Olympians swear on the River Styx to claim their children by the age of 13, give Hades and the minor gods thrones on Olympus, give them cabins at Camp Half-Blood, and to never make a pact to limit the number of demigod children of the Big Three (as it didn't work anyway).
 * Percy realizes Luke was the true hero.
 * The Second Great Prophecy is revealed.
 * Percy and Annabeth fall in love/start dating.

September
September 15, 2009
 * Aeolus orders all demigods to be killed
 * Venti are released after the death of Typhon

October

 * It is revealed that Percy Jackson disappeared sometime in October, and not in December as mentioned in 'The Lost Hero'.

November

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

December

 * December 15, 2007
 * Thalia, Percy, and Annabeth meet up with Grover who has been tracking two demigods; Nico and Bianca
 * Annabeth is captured by Dr. Thorn.
 * December 13, 2009-Percy Jackson goes missing.
 * December 16, 2009-Jason Grace, Piper McLean, and Leo Valdez go to Camp Half-Blood and the second Great Prophecy is set in motion.
 * December 17,2009-Jason Grace, Leo Valdez, and Piper McLean begin their 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 20, 2009-Aeolus cancels his order for all demigods to be killed.
 * 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,atlas, while fighting him on Mount Orthys, the Titan base in The Titan's Curse.
 * A new constellation is formed by Artemis from the body of Zoe Nightshade, known as 'the Huntress'.
 * December 21,2009
 * Jason, Piper and Leo rescue Hera from Gaea.
 * Porphyrion is resurrected from Tartarus at the Wolf House.
 * The Second Giants War Begins
 * December 22, 1988-Thalia Grace is born to Ms. Grace and Zeus