Remembrance Day pin for the SS Puget Sound
"Many of us have known those who have made the ultimate sacrifice. Officers, scientists, civilians who gave their lives in the hope for galactic peace. Today we remember the friends and comrades we lost. Exploration can exact a heavy toll. As captain, there is no loss more devastating than that of a crew member. Remembrance Day is about them."
Starfleet Remembrance Day was a Starfleet holiday dedicated to the memory of those who had lost their lives in service to Starfleet, officers and civilians alike. On the day, it was customary to wear a pin bearing the name and insignia of a past ship on which one had served with their lost comrades.
In 2259, the crew of the USS Enterprise observed Remembrance Day during their mission to Finibus III. Ships memorialized by various crew members included the USS Angelou, USS Antares, USS Cuyahoga, USS Discovery, USS Excalibur, USS Farragut, USS Gallant, USS Kongo, USS Palenque, SS Puget Sound, USS Shenzhou, and USS Yangtze. (SNW: "Memento Mori")