This is our day guide for Wednesday September 3rd 2025 which shows you at a glance what's happening on this day around the world. Using the calendar on this page, you can look at a day guide for any day. Why not look up your birthday to see which holidays you share it with?
Observances on September 3rd 2025
Merchant Navy Day
Merchant Navy Day is observed in the UK and Canada, honouring the sacrifices made during war and conflict.
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Public Holidays on September 3rd 2025
San Marino Foundation Day
San Marino was founded in 301 AD by St. Marinus, a stone mason from Croatia who wanted to escape persecution by the emperor Diocletian
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