Wednesday, 17th September 2025 in Lisbon
Welcome to your daily snapshot of Lissabon! It's World Patient Safety Day. Explore 70 historical events, birthdays, deaths, and milestones that shaped this day in Lissabon. From remarkable moments in local and world history to the people who left their mark — find out what makes today special. Today's weather in Lissabon brings sunny with temperatures between 16°C and 33°C. Tonight's moon is in its first quarter phase, and the zodiac sign of the day is Virgo. If you're curious about the history of a day — this page brings together everything worth knowing about this Wednesday, 17th September in Lissabon, PT.

On Wednesday, 17th September 2025, Lisbon experiences sunny conditions under a first quarter moon, with the sun moving through Virgo. The Portuguese capital, situated on the banks of the Tagus River, serves as one of Europe's oldest cities and a significant cultural centre with a rich maritime heritage.
History marked this date with several significant developments across different eras and continents. In 1980, Solidarity emerged as the first independent trade union in an Eastern Bloc country, fundamentally challenging the political structures of communist Poland. More recently, in 2011, anti-consumerist activists organized a protest at Zuccotti Park in New York City, which evolved into the Occupy Wall Street movement that questioned corporate influence on democracy. Ronald Reagan's 1985 public acknowledgement of AIDS represented a turning point in American political discourse surrounding the epidemic, coming years after the disease had been identified in the United States.
The historical record extends further back, encompassing military campaigns, political transitions and cultural developments that shaped nations. Belgian cartoonist Hergé began serialisation of Tintin in Tibet in 1958, a work he would later regard as his personal favourite among the Tintin adventures. Medieval European politics saw significant changes in 1382 when Mary of Hungary was crowned with the title of King following her father Louis I's death without a male heir.
DayAtlas provides comprehensive information about weather conditions, historical events, and notable births and deaths for any specified date and location, allowing users to explore what occurred on specific days throughout history.
Find out what's happening today in Lissabon.
What the Weather Had in Store for Lissabon on 17th September 2025
Eight doors stand open; entering one closes seven others.
Fortune of the Day
17th September in the Stars – Star Sign Virgo
Personality Profile
Personality People born on September 17 combine Virgo's analytical nature with Saturn's disciplined influence. They appear calm, thoughtful, and dependable, with a strong inner need for order. These individuals pursue perfection and stability in all life areas.
Strengths & Weaknesses Their strengths lie in precision, endurance, and practical intelligence. They're conscientious and solve complex problems elegantly. A weakness is their tendency toward excessive criticism—of themselves and others.
Love In relationships, September Virgos are loyal and attentive, though initially reserved. They show affection through practical help and reliability rather than grand gestures. Partners should respect their need for order and intellectual stimulation.
Caree & Finance Professionally, these people excel in analytical, structured roles—accounting, engineering, medicine. The numerology-8 energy promotes business acumen and wealth-building. They work methodically and often achieve financial stability through discipline.
Health These natives should manage stress, as their critical nature can lead to inner tension. Regular exercise, yoga, or meditation help them relax. A structured routine and adequate sleep are essential for their wellbeing.
That night, the moon was in its first quarter phase.
Chinese year of the Snake (Wood).
Fun Facts About 17th September
Name Days in Your Language: Ariadne, Ariana, Arianna, Hildegard, Hildegarde, Lambert, Lambertine
Someone born on this day would be just 215 days old today — roughly 5,180 hours, 310,823 minutes, or 18,649,427 seconds spent on Earth so far.
It's the 260. day of the year.
There are 105 days still to come.
We’re currently in Week 38 — the year marches on.
Famous Birthdays on 17th September
- Elina Avanesyan, Russian-Armenian tennis player (2002)
- Jaimee Fourlis, Australian tennis player (1999)
- Daniel Huttlestone, English actor (1999)
- Kim Dong-hyun, South Korean singer (1998)
- Auston Matthews, American ice hockey player (1997)
- Duje Ćaleta-Car, Croatian footballer (1996)
- Esteban Ocon, French Formula One racing driver (1996)
- Slayyyter, American singer and songwriter (1996)
- Choi Young-jae, South Korean singer and actor (1996)
- Michael Bunting, Canadian ice hockey player (1995)
Lives Remembered on 17th September
- Roger Climpson, English-Australian journalist and television host (born 1932) (2025)
- Nelson DeMille, American lieutenant and author (born 1943) (2024)
- Neil King Jr., American journalist and author (born 1959) (2024)
- JD Souther, American singer, songwriter, and actor (born 1945) (2024)
- Maarten Schmidt, Dutch astronomer (born 1929) (2022)
Celebrations & Special Days Worldwide on 17th September
- Australian Citizenship Day
- Christian feast day: Albert of Vercelli
- Christian feast day: Ariadne of Phrygia
- Christian feast day: Blessed Cecilia Eusepi
- Christian feast day: Stanislaus Papczyński
- Christian feast day: Hildegard of Bingen
- Christian feast day: Lambert
- Christian feast day: Robert Bellarmine
- Christian feast day: Satyrus of Milan
- Christian feast day: Socrates and Stephen
- Christian feast day: Zygmunt Szczęsny Feliński
- Christian feast day: September 17 (Eastern Orthodox liturgics)
- Constitution Day and Citizenship Day, observed on the previous Friday if it falls on a Saturday, the following Monday if on a Sunday; and the beginning of the Constitution Week (United States)
- Heroes' Day (Angola)
- Marathwada Liberation Day (Maharashtra)
- National Unity Day (Belarus) (since 2021)
- Operation Market Garden Anniversary is still remembered with parachuting and dedications on this day. (Netherlands)
What Happened on 17th September?
- Saudi Arabia and Pakistan sign the Strategic Mutual Defence Agreement. (2025)
- A Russian reconnaissance aircraft carrying 15 people on board is brought down by a Syrian surface-to-air missile over the Mediterranean Sea. (2018)
- Two bombs explode in Seaside Park, New Jersey, and Manhattan. Thirty-one people are injured in the Manhattan bombing. (2016)
- Grand Theft Auto V earns more than half a billion dollars on its first day of release. (2013)
- Occupy Wall Street movement begins in Zuccotti Park, New York City. (2011)
- Fourpeaked Mountain in Alaska erupts, marking the first eruption for the volcano in at least 10,000 years. (2006)
- An audio tape of a private speech by Hungarian Prime Minister Ferenc Gyurcsány is leaked to the public, in which he confessed that his Hungarian Socialist Party had lied to win the 2006 election, sparking widespread protests across the country. (2006)
- The New York Stock Exchange reopens for trading after the September 11 attacks, the longest closure since the Great Depression. (2001)
- George W. Bush, president of the United States, delivers remarks at the Islamic Center of Washington praising Muslim Americans and condemning Islamophobia in the aftermath of the September 11 attacks. (2001)
- An Iranian Kurdish leader and his two joiners are assassinated by political militants in Berlin. (1992)