Windows Plutonium-239 Half-Life (24000) Windows Uranium-236 Half-Life (891000000) Windows Uranium-238 Half-Life (4468300000) Windows Oleic (6022000000000000000000) Windows Tellurium-128 Half-Life (10^24 AD) ØLonghorn (Ø2004) ØLonghorn Beta 1 (Ø2005) Windows ØVista Beta 2 (Ø2005) Windows ØVista Beta 2.1 to RC2 (Ø2006) Windows Ø10 Technical Preview (Ø2014) Windows True Grand Finale (Ω^ΩEΩ^ΩØΩ^ΩEΩ^Ω/.Ω^ΩEΩ^Ω)
For OSM 5.875: Windows KT 1.0n (2009n) Windows KT 1.0u (2009u) Windows KT z1.0 (z+2009) Windows KT α1.0 (α2009) Windows KT Completely Meaningless Time (z^zתz^z) Windows KT Completely Meaningless Time SE (z^zZz^z/.z^zZz^zωz^zZz^z/.z^zZz^zתz^zZz^z/.z^zZz^zωz^zZz^z/.z^zZz^z)
Windows Full Circle (2π)(2π rad = 360°) Windows KT 1.0-Dπ^4 (π*(10^10^10^10^2009)π) Windows KT 1.0-Dπ^5 (π*(10^^5^2009)π) Windows KT 1.0-Dπ^6 (π*(10^^6^2009)π) Windows KT 1.0-Dπ^10 (π*10^^10^2009)π) YoctoOS Resurrection (2nd of 13800000000 BC) YoctoOS 2nd of 1.0 (2nd of 1.0) YoctoOS Overcycle (2020th of 1) YoctoOS ∞ (nth of 1) YoctoOS True Real ∞ (∞)