The word that can be used as a one-word substitute for the given group of words "the arrangement of events or dates in the order of their occurrence" is chronology.
- Calendar is a system for measuring and recording time, typically one that divides the year into 12 months.
- Chronic means of long duration or frequent recurrence.
- Routine means a fixed and regular course of procedure.
Chronology is the arrangement of events or dates in the order of their occurrence. It is a way of organizing information about events so that it can be easily understood and remembered. | 
