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Reliability & Operations

Incident Timeline Builder

Sort timestamped incident events and show elapsed minutes from the first event.

Calculations run in your browser. The tool does not send your inputs to a server.

01Your inputs

Local workspace

Start with the sample below, or enter your own values.

Use an explicit timezone, for example 2026-01-01T09:00:00Z (UTC). Time precision is milliseconds: use at most three fractional-second digits.

02Your result

Your result will appear here. Choose an action after checking your inputs.

A quick guide

How to use this tool

  1. Check the example and the unit beside each input.
  2. Enter your values and choose Build.
  3. Review the result and assumptions, then copy what you need.

Reset example restores the starting values. Clear removes text and number inputs, returns choices to their first valid option, and removes the result.

Reference guide

Explanation and worked examples

Use one ISO timestamp and description per line, separated by |. Explicit timezones make events from different systems comparable.

Use in day-to-day IT work

Combine timestamped monitoring and engineer notes into an incident chronology.

Checks before applying the result

  • Retain original logs and note clock skew, delayed alerts and uncertain times. Use UTC or explicit offsets.
  • Elapsed time starts at the first supplied event, which may differ from the actual impact start.
New to the terminology?
SLA
A service agreement that defines a target and how it is measured.
RTO
Recovery Time Objective: how quickly service must be restored.
RPO
Recovery Point Objective: how much recent data loss is acceptable.

Keep exploring

SLA / Uptime CalculatorCombined SLA CalculatorMTBF / MTTR CalculatorRTO / RPO Planner

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