# Adding system time down to millisecond?

**URL:** <https://discourse.psychopy.org/t/adding-system-time-down-to-millisecond/3855>\
**Category:** Builder\
**Created:** [February 1, 2018, 6:11am UTC](https://discourse.psychopy.org/t/adding-system-time-down-to-millisecond/3855 "2018-02-01T06:11:39Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![andhinizia](https://avatars.discourse-cdn.com/v4/letter/a/45deac/32.png) [@andhinizia](https://discourse.psychopy.org/u/andhinizia)\
**Post date:** [February 1, 2018, 6:11am UTC](https://discourse.psychopy.org/t/adding-system-time-down-to-millisecond/3855/1 "2018-02-01T06:11:40Z")

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I am currently working on an experiment in which I need to record the exact time of stimulus presentation and participants’ responses. I understand that PsychoPy records date and time in the csv result file (with the following format: 2018\_Feb\_01\_1243). Is it possible to have the time (12.43) be more specific down to millisecond? I’m using PsychoPy v1.85.4 on windows 7