Area 51
Monday
The seven-day week has maintained continuous human usage for approximately 4,000 years, with the Babylonians establishing the foundational structure. Monday, as the first day of the working week in most contemporary cultures, has occupied its current symbolic position for roughly 150 years of industrial history.
Monday's longevity appears structurally guaranteed. Attempts to implement alternative week structures have consistently failed, suggesting that the seven-day cycle occupies a deeply embedded position in human temporal organisation. Monday shall persist as long as this structure remains.