The time extension to NetLogo makes it easy to use real dates and times, and time-series inputs and outputs, in NetLogo models. It also supports use of discrete-event simulation (models in which agents schedule future actions at specific times), as discussed in our paper on using NetLogo for large models. The recently released version 6.2 of NetLogo includes the time extension as one of its built-in (“bundled”) extensions. Documentation is here at the extension’s Github site. Thank you to Uri Wilensky and Jacob Kelter of the NetLogo team, to the Swarm Development Group for partially funding the extension, and to its original author Colin Sheppard.