Tempointervalli

Tempointervalli refers to the duration between two instants in time. It describes the length of a period during which an event can occur or a measurement can be taken. In mathematical terms, if t1 and t2 are instants with t2 ≥ t1, the interval is [t1, t2] and its duration is Δt = t2 − t1. In some contexts, time intervals are treated as half-open, usually [t1, t2), to align with indexing conventions where the end instant is not included. Time intervals can be calendar-based (between dates) or clock-based (between times). They are expressed in units such as seconds, minutes, hours, days, or years, and they may be affected by time zones and daylight saving adjustments when calendar-based.

Applications include experimental design, data analysis, scheduling, and software development. In data analysis, selecting data within a tempointervalli (time window) is common; in programming, timeouts and timer intervals are defined to trigger actions after a specified Δt. Related concepts include duration (the length itself), time window (a fixed interval used for analysis), sampling interval (time between successive samples), and inter-arrival time (time between events).