Did this for a
scifilandchallenge last year..
Vestigial Valentines
Rating: PG
Fandom: Firefly
Words: 1,214
Note: Valentine's Day on Serenity. Who's Cupid? (Old-fashioned Valentine's cards herein.)
Even though, as River had noted, the concept of “days” and “months” was irrelevant to Life in the Black (or, as she put it, "a vestigial mode of time measurement based on solar cycles … not applicable"), there was always someone that kept them on some version of an Old Earth calendar, bringing in the half-remembered holidays from multiple cultures like faded photographs, memories in bits and pieces.
So, as it got closer to what they thought would be February 14th, it was so declared to celebrate the day of Saint Valentine, whose history and provenance were unknown, but whose legacy survived, somewhat.
From their diverse and collective memory, they conjured up a list that included: chocolate, heart-shaped bits of paper, fat naked babies with wings and mysteriously inclined bows and arrows, and romance.