This site is about the declaring “Demise retains no calendar”
Probable this means:
In this expressing, “Dying” is personified as a religious becoming who may possibly contact on us at any time – he has no appointment e book. We never know when we will die.
Death (noun) = personification of the power that destroys life | loss of life (noun) = the act of dying the conclusion of life | calendar (noun) = chart showing the times, months and months of every single calendar year diary datebook
See Stating of the Day nowadays