The "arrow of time" in physics describes how disorder in nature increases with time, which is an asymmetric or directional aspect of time. This suggests a connection between time and [[entropy]]. Space lacks this type of asymmetry.
Assumptions about time underlie the [[Theory of Relativity]]. That theory characterizes time as an additional dimension beyond space
, and denies the possibility of events occurring at the same time in two difference points in space.
In legal proceedings, court rules specify how time is calculated for determining deadlines. The [[Federal Rules of Civil Procedure]], for example, has a separate Rule 6 entitled "'''Time'''". As of 2008 it specifies that holidays and weekends are included in calculating time periods for deadlines unless the period "prescribed or allowed is less than 11 days." When the deadline falls on a weekend or holiday or day in which the office of the clerk is inaccessible due to "weather or other conditions," then the deadline is the next day not aforementioned.