In September, Bilbo and Frodo both celebrate their birthdays. on the 22nd of the month. The "long-expected party" marks the beginning of the Lord of the Rings, and this date was also the last one that Frodo spent in Bag End several years later. Many Tolkien companies around the world cebebrate this date as Hobbit Day, and so Birthdays will also be out topic for this month. Thanks to Gemstarzah for the suggestion!
Aragorn was born on March 1st. About Legolas we do not know the exact date of his birth. Elves actually don't celebrate their birthdays, but the begetting day, since bringing forth children is an act of will, so you can use this celebration instead of birthday when writing about Elves.
We do not know much about how Elves or Men in Middle-earth celebrated their birthday or begetting day, but it's very possible it was in a bit more humble way than the Hobbits, with Bilbo as the most famous example.
Birthdays are connected not only with parties, but also presents. Hobbits give them, which is mentioned as a pecularity, so it's possible that other races receive them as we are used to. Sometimes you don't even have time to celebrate or remember your birthday, but receive a present anyways: it was Aragorn's 88th birthdays when met Gandalf the White in Fangorn again.
And the winners are:
Eldarion's Birthday Surprise by Linda Hoyland
Friendship Found in Unexpected Places by Finfinfin 3rd place
The Gift of Friendship by lotrfn 2nd place
The Greatest Gift by Jessica Kleeberger 1st place
This month's pictures:
Feanor. Birthday. by Irsanna
Happy reading and congratulations to the winners!