Secunda

Secunda, also known as Jone or Shandar's Sorrow, is the smaller of the two moons in orbit of Nirn, the other being Masser. The moons can easily be seen in the night sky throughout Tamriel.

Reverence

Stages of the moon, Secunda

Among the Khajiit, Secunda, as well as Masser, are revered because their lunar phase helps determine the forms Khajiit take at birth.
Lorkhan, "The Missing God," was sundered into two halves during his destruction, becoming both Masser and Secunda. The two moons symbolize his duality, reminding his man-creations of his struggle.
Secunda vanished together with Masser between 4E 98 and 4E 100 during what was known as the Void Nights.

Secunda as the Bloodmoon

Becoming the Bloodmoon

During the Bloodmoon Prophecy, Secunda became the Bloodmoon once every era. It is the fourth and final sign of the prophecy, as it is tainted with the blood of Hircine's crimson tides. After the prophecy ended, Secunda returned to its normal state.