https://github.com/davepinch/pinchy.cc/blob/master/content/topics/discworld/novels/19-feet-of-clay/quotes/I-AM-DEATH-NOT-TAXES.md
Phoenix landed in the Green Valley of Vastitas Borealis on May 25, 2008, in the late Martian northern hemisphere spring (Ls=76.73), where the Sun shone on its solar panels the whole Martian day.