.. index:: single: tzif .. _tzif/0:

.. rst-class:: right

object

tzif

Loader, per-zone cache and snapshot persistence support, and zone-aware UTC lookup predicates for TZif v1/v2/v3 files.

| Availability: | logtalk_load(tzif(loader))

| Author: Paulo Moura | Version: 1:0:0 | Date: 2026-04-07

| Compilation flags: | static, context_switching_calls

| Implements: | public :ref:`tzif_protocol <tzif_protocol/0>` | Uses: | :ref:`date <date/0>` | :ref:`list <list/0>` | :ref:`logtalk <logtalk/0>` | :ref:`os <os/0>` | :ref:`reader <reader/0>` | :ref:`tzif_zone_ids <tzif_zone_ids/0>`

| Remarks: | (none)

| Inherited public predicates: |  :ref:`tzif_protocol/0::abbreviation/2`  :ref:`tzif_protocol/0::abbreviation/3`  :ref:`tzif_protocol/0::abbreviation/4`  :ref:`tzif_protocol/0::cache/1`  :ref:`tzif_protocol/0::cache_source/1`  :ref:`tzif_protocol/0::cached_tzif/1`  :ref:`tzif_protocol/0::clear_cache/0`  :ref:`tzif_protocol/0::daylight_saving_time/2`  :ref:`tzif_protocol/0::daylight_saving_time/3`  :ref:`tzif_protocol/0::daylight_saving_time/4`  :ref:`tzif_protocol/0::load/1`  :ref:`tzif_protocol/0::load/2`  :ref:`tzif_protocol/0::local_abbreviation/2`  :ref:`tzif_protocol/0::local_abbreviation/3`  :ref:`tzif_protocol/0::local_abbreviation/4`  :ref:`tzif_protocol/0::local_abbreviation_reified/2`  :ref:`tzif_protocol/0::local_abbreviation_reified/3`  :ref:`tzif_protocol/0::local_abbreviation_reified/4`  :ref:`tzif_protocol/0::local_abbreviation_with_resolution/3`  :ref:`tzif_protocol/0::local_abbreviation_with_resolution/4`  :ref:`tzif_protocol/0::local_abbreviation_with_resolution/5`  :ref:`tzif_protocol/0::local_daylight_saving_time/2`  :ref:`tzif_protocol/0::local_daylight_saving_time/3`  :ref:`tzif_protocol/0::local_daylight_saving_time/4`  :ref:`tzif_protocol/0::local_daylight_saving_time_reified/2`  :ref:`tzif_protocol/0::local_daylight_saving_time_reified/3`  :ref:`tzif_protocol/0::local_daylight_saving_time_reified/4`  :ref:`tzif_protocol/0::local_daylight_saving_time_with_resolution/3`  :ref:`tzif_protocol/0::local_daylight_saving_time_with_resolution/4`  :ref:`tzif_protocol/0::local_daylight_saving_time_with_resolution/5`  :ref:`tzif_protocol/0::local_offset/2`  :ref:`tzif_protocol/0::local_offset/3`  :ref:`tzif_protocol/0::local_offset/4`  :ref:`tzif_protocol/0::local_offset_reified/2`  :ref:`tzif_protocol/0::local_offset_reified/3`  :ref:`tzif_protocol/0::local_offset_reified/4`  :ref:`tzif_protocol/0::local_offset_with_resolution/3`  :ref:`tzif_protocol/0::local_offset_with_resolution/4`  :ref:`tzif_protocol/0::local_offset_with_resolution/5`  :ref:`tzif_protocol/0::local_time_type/2`  :ref:`tzif_protocol/0::local_time_type/3`  :ref:`tzif_protocol/0::local_time_type/4`  :ref:`tzif_protocol/0::local_time_type_reified/2`  :ref:`tzif_protocol/0::local_time_type_reified/3`  :ref:`tzif_protocol/0::local_time_type_reified/4`  :ref:`tzif_protocol/0::local_time_type_with_resolution/3`  :ref:`tzif_protocol/0::local_time_type_with_resolution/4`  :ref:`tzif_protocol/0::local_time_type_with_resolution/5`  :ref:`tzif_protocol/0::offset/2`  :ref:`tzif_protocol/0::offset/3`  :ref:`tzif_protocol/0::offset/4`  :ref:`tzif_protocol/0::save/1`  :ref:`tzif_protocol/0::save/2`  :ref:`tzif_protocol/0::time_type/2`  :ref:`tzif_protocol/0::time_type/3`  :ref:`tzif_protocol/0::time_type/4`  :ref:`tzif_protocol/0::zone/3`  :ref:`tzif_protocol/0::zones/1`  :ref:`tzif_protocol/0::zones/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

.. index:: cached_tzif_/2 .. _tzif/0::cached_tzif_/2:

cached_tzif_/2 ^^^^^^^^^^^^^^^^^^

Table holding the currently cached TZif terms keyed by zone identifier.

| Compilation flags: | dynamic

| Template: | cached_tzif_(Zone,TZif) | Mode and number of proofs: | cached_tzif_(?atom,?compound) - zero_or_more

---

Operators

(none)