package ptime

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POSIX time for OCaml


Dune Dependency





Ptime — POSIX time for OCaml


Ptime has platform independent POSIX time support in pure OCaml. It provides a type to represent a well-defined range of POSIX timestamps with picosecond precision, conversion with date-time values, conversion with RFC 3339 timestamps and pretty printing to a human-readable, locale-independent representation.

The additional Ptime_clock library provides access to a system POSIX clock and to the system's current time zone offset.

Ptime is not a calendar library.

Ptime depends on the result compatibility package. Ptime_clock depends on your system library. Ptime_clock's optional JavaScript support depends on js_of_ocaml. Ptime and its libraries are distributed under the ISC license.

Home page:


Ptime can be installed with opam:

opam install ptime
opam install js_of_ocaml ptime  # ptime with jsoo support

If you don't use opam consult the opam file for build instructions.


The documentation and API reference is generated from the source interfaces. It can be consulted online or via odig doc ptime.

Sample programs

If you installed Ptime with opam sample programs are located in the directory opam config var ptime:doc.