# PPSAPI Interface for Precision Time Signals

**URL:** <https://community.nwtime.org/t/ppsapi-interface-for-precision-time-signals/162>\
**Category:** Documentation\
**Created:** [February 11, 2026, 3:02pm UTC](https://community.nwtime.org/t/ppsapi-interface-for-precision-time-signals/162 "2026-02-11T15:02:31Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Dru](https://sea1.discourse-cdn.com/flex001/user_avatar/community.nwtime.org/dru/32/337_2.png) [@Dru](https://community.nwtime.org/u/Dru)\
**Post date:** [February 11, 2026, 3:02pm UTC](https://community.nwtime.org/t/ppsapi-interface-for-precision-time-signals/162/1 "2026-02-11T15:02:31Z")

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> **[PPSAPI Interface for Precision Time Signals](https://www.ntp.org/documentation/4.2.8-series/kernpps/)**
>
> NTPv4 supports RFC 2783, which describes the PPSAPI application programming interface for external precision time signals, such as the pulse-per-second (PPS) signal generated by some radio clocks and cesium oscillators.