What is the significance of the "prescribed date" mentioned in the context?
The significance of the "prescribed date" mentioned in the context is that it marks the point at which every autonomous region existing immediately before this date in the Union territory of Mizoram becomes an autonomous district, and consequential amendments are made to paragraph 20 of the Schedule. Additionally, every Regional Council of an autonomous region becomes a temporary District Council until a proper one is duly constituted for the corresponding new district.