Count the days from Friday, October 2. The nearest Taiwan-calendar fight that is not National Day — which this paper holds for the October Friday closest to October 10 — is the Battle of Tamsui on October 8, 1884.
France was at war with the Qing empire over Vietnam. After wrecking the Fujian fleet at Fuzhou in August, Admiral Sébastien Lespès wanted a port on northern Taiwan as a bargain chip. Keelung was already a grind. Tamsui, at the river that leads toward Taipei, looked like the second jaw of a pincer.
Liu Ming-chuan had blocked the river with stone-filled junks and remotely fired mines. Sun Kaihua placed a few thousand soldiers and militia behind the White Fort and in the scrub above Shalun beach. French ships bombarded from October 2. Rough water delayed a landing until the morning of the 8th, when about 600 fusiliers-marins went ashore under naval guns.
They did not get far. Qing units hit them from more than one side. Within a couple of hours the landing party was back on the boats. French losses were listed at 17 dead and 49 wounded; Qing losses were higher, on the order of 80 dead and 200 wounded. Some captured French sailors were beheaded, and the heads were shown before Tamsui’s Mazu temple. Local memory still credits the goddess with shielding the town when shells fell short.
The clash did not end the Keelung campaign, and France kept Vietnam in the peace that followed. It did keep French ships out of the Tamsui River and gave Beijing a victory to advertise after Fuzhou. Walk the river mouth today and the forts and Fuyou Temple still face the channel the mines once closed. That is the anniversary that sits six days from this Friday, not the holiday that waits one week more.
Sources - https://en.wikipedia.org/wiki/Battle_of_Tamsui - https://www.nmth.gov.tw/en