Today is the sixteenth of Suns Dawn, also known as
Heart's Day, in honor of the two famous lovers, Polydor and Eloisa. Due to the cruelty of the world around them, their story came to a less fortunate end. In fact, it is said that if a simple kindness such as a room to sleep in had been offered them, Tamriel would have known eternal Spring.
It is also the summoning day of Sanguine, which may or may not be related to the other holiday. I'm genuinely unsure, as the Legend of the Lovers is, interestingly enough, undocumented, if I am wrong please correct me.