The fire season on the planet Sphinx occurred irregularly in the late summer, often leading to immense forest fires in various areas. It occurred roughly every 4 to 6 planetary years (21 to 31.5 T-years). (HHA6.4: TBLP)
The 1521 PD fire season devastated the nesting grounds of the Damp Ground and Swaying Fronds Clans. It was also the first time the human Sphinx Forestry Service intervened to save endangered treecats, having learned of the existence of the species a short time earlier. (SK2, SK3)
- ↑ Lionheart had only experienced one as a kitten before 1521 PD.