Some neat (I think, anyway) little parallels (coincidences, really) about May 7, my birthday. Add your own.
1429: Joan of Arc ends the siege of Orleans.
1718: The city of New Orleans is founded.
1915: WWI: A German U-boat sinks the Lusitania.
1945: WWII: Germany officially surrenders.
My birthday (April 11) falls on Easter Sunday every 11 years (1971, 1982, 1993, 2004. Unfortunately, it’s going to skip until 2060.)
Sept. 1:
1666 - Great Fire of London
1864 - Confederate troops evacuate Atlanta
1939 - Hitler invades Poland, triggering WWII
1985 - RMS Titanic wreck discovered by Robert Ballard
So two good, two bad!
July 16:
1945: First atom bomb successfully tested at Trinity site
1981: India performs its first nuclear test.
1987: England testsits own in Nevada.
1990: 400 die in a magnitude 7.7 earthquake in Philippines
2007: 8 die in a magnitude 6.8 earthquaqe and aftershock of 6.6 off the Niigata coast, Japan, which also damages a nuclear power plant
And on my specific birthday (1976) Loggins and Messina officially broke up.
July 20, 1969: Born on the same day Neil Armstrong allegedly walked on the moon.
June 30:
1905 – Albert Einstein publishes the article On the Electrodynamics of Moving Bodies, in which he introduces special relativity.
1908 – The Tunguska event occurs in remote Siberia.
1953 – The first Chevrolet Corvette rolls off the assembly line in Flint, Michigan.
And somewhat disappointingly:
1986 – The U.S. Supreme Court rules in Bowers v. Hardwick that states can outlaw homosexual acts between consenting adults.
There seemed to be a lot for my birthday.
March 3rd:
1915 – NACA, the predecessor of NASA, is founded.
1923 – TIME magazine is published for the first time.
1931 – The United States adopts “The Star-Spangled Banner” as its national anthem.
1938 – Oil is discovered in Saudi Arabia.
1951 – Jackie Brenston, with Ike Turner and his band, records “Rocket 88”, often cited as “the first rock and roll record”.
2005 – Steve Fossett becomes the first person to fly an airplane non-stop around the world solo without refueling.
May 2nd:
1611 – The King James Bible is published for the first time in London, England, by printer Robert Barker.
1945 – World War II: Fall of Berlin: The Soviet Union announces the capture of Berlin and Soviet soldiers hoist their red flag over the Reichstag building.
1945 – World War II: Italian Campaign – General Heinrich von Vietinghoff signs the official instrument of surrender of all Wehrmacht forces in Italy.
1986 – The Chernobyl Disaster: The City of Chernobyl is evacuated six days after the disaster
2011 – Osama bin Laden, the suspected mastermind behind the September 11 attacks and the FBI’s most wanted man is killed by the United States special forces in Abbottabad, Pakistan.
25 May: No interesting parallels, as asked about in the OP, but some interesting events such as the first recorded perihelion passage of Halley’s Comet (240 BC) and the signing of a treaty to end a war between Pennsylvania and Maryland (1738).
May 17 (focusing on anniversary/birth dates):
1756 - Britain declares war on France (7 Years’ or French & Indian War)
1792 - 24 merchants form New York Stock Exchange at 70 Wall Street
1814 - Denmark cedes Norway to Sweden (National Day)
1859 - Australian Rules Football first ‘laws of the game’ published
1860 - German football club TSV 1860 München is founded
1883 - Buffalo Bill Cody’s 1st wild west show premieres in Omaha
1884 - Alaska becomes a US territory
1938 - US Congress approves Vinson Naval Act, which funds a two-ocean navy
2004 - Massachusetts becomes the first U.S. state to legalize same-sex marriage
October 25: birthday of Macaulay, Bizet, Picasso, Richard E. Byrd, Minnie Pearl, Billy Barty and Helen Reddy. In 1953, when I was born, the Cleveland Browns’ quarterback set a record for the most fumbles; a coal mine in Belgium exploded, and Shostakovich completed his 10th Symphony.
Culkin?
March 6. Margaret Dumont died on my birthday in 1965. 
Besides that, the most notable historical parallel for my birthday was that the Missouri Compromise was signed on my birthday in 1820, and the Supreme Court handed down its decision in the Dred Scott case on my birthday in 1857.
Not exactly a day to celebrate, huh?
And that was hardly the only bad shit that happened on my birthday: the Alamo was overrun (1836), and the infamous First Fleet landed at Norfolk Island in the Southern Ocean to set up a prison colony (1788).
August 18
1587 – Virginia Dare, granddaughter of Governor John White of the Colony of Roanoke, becomes the first English child born in the Americas.
1590 – John White, the governor of the Roanoke Colony, returns from a supply trip to England and finds his settlement deserted.
1612 – The trial of the Pendle witches, one of England’s most famous witch trials, begins at Lancaster Assizes.
1634 – Urbain Grandier, accused and convicted of sorcery, is burned alive in Loudun, France.
No. Thomas.
It seems many people think the OP request for “little parallels (coincidences, really)” means something of interest with no connection to anything else.
You noticed that, too, eh?
That’s my birthday too! 
HistoryOrb.com tells me I was born on the anniversary of the 10th recorded perihelion passage of Halley’s Comet in AD 451 and of the first recorded UFO sighting in 1947, of flying saucers over Mount Rainier (that one I already knew).
Easter was on my birthday, March 28 1948, the year before I was born, 1949. It hasn’t occurred on my birthday again and won’t until 1927 when I will be 78. Then I get it again in 1932 and 83 if I hang on so long.