.. index:: single: date .. _date/0:

.. rst-class:: right

object

date

Date predicates.

| Availability: | logtalk_load(dates(loader))

| Author: Paulo Moura | Version: 1:3:0 | Date: 2026-02-25

| Compilation flags: | static, context_switching_calls

| Implements: | public :ref:`datep <datep/0>` | Uses: | :ref:`os <os/0>`

| Remarks: | (none)

| Inherited public predicates: |  :ref:`datep/0::add_duration/3`  :ref:`datep/0::date_time_to_unix/2`  :ref:`datep/0::day_of_year/2`  :ref:`datep/0::days_in_month/3`  :ref:`datep/0::duration_between/3`  :ref:`datep/0::leap_year/1`  :ref:`datep/0::local_to_utc/3`  :ref:`datep/0::name_of_day/3`  :ref:`datep/0::name_of_month/3`  :ref:`datep/0::normalize_date_time/2`  :ref:`datep/0::subtract_duration/3`  :ref:`datep/0::today/3`  :ref:`datep/0::unix_to_date_time/2`  :ref:`datep/0::utc_to_local/3`  :ref:`datep/0::valid/3`  :ref:`datep/0::valid_date_time/1`  :ref:`datep/0::valid_date_time/2`  :ref:`datep/0::week_of_year_iso/2`  :ref:`datep/0::weekday/2`  

.. contents:: :local: :backlinks: top

Public predicates

(no local declarations; see entity ancestors if any)

Protected predicates

(no local declarations; see entity ancestors if any)

Private predicates

(no local declarations; see entity ancestors if any)

Operators

(none)