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struct Time::Location::Zone

Overview

A Zone represents a time zone offset in effect in a specific Location.

Some zones have a #name or abbreviation (such as PDT, CEST). For an unnamed zone the formatted offset should be used as name.

Defined in:

time/location.cr

Constant Summary

UTC = new("UTC", 0, false)

This is the UTC time zone with offset +00:00.

It is the only zone offset used in Time::Location::UTC.

Constructors

Instance Method Summary

Instance methods inherited from struct Struct

==(other : YAML::Any)
==(other) : Bool ==, hash(hasher) hash, inspect(io : IO) : Nil inspect, pretty_print(pp) : Nil pretty_print, to_s(io : IO) : Nil to_s

Class methods inherited from struct Struct

pre_initialize(address : Pointer) : Nil pre_initialize

Instance methods inherited from struct Value

==(other : Log::Metadata::Value)
==(other : JSON::Any)
==(other : YAML::Any)
==(other) ==, dup dup

Instance methods inherited from class Object

! : Bool !, !=(other) !=, !~(other) !~, ==(other) ==, ===(other : JSON::Any)
===(other : YAML::Any)
===(other) ===, =~(other) =~, as(type : Class) as, as?(type : Class) as?, class class, dup dup, hash(hasher)
hash hash, in?(collection : Object) : Bool
in?(*values : Object) : Bool in?, inspect(io : IO) : Nil
inspect : String inspect, is_a?(type : Class) : Bool is_a?, itself itself, nil? : Bool nil?, not_nil!(message)
not_nil! not_nil!, pretty_inspect(width = 79, newline = "\n", indent = 0) : String pretty_inspect, pretty_print(pp : PrettyPrint) : Nil pretty_print, responds_to?(name : Symbol) : Bool responds_to?, tap(&) tap, to_json(io : IO) : Nil
to_json : String to_json, to_pretty_json(indent : String = " ") : String
to_pretty_json(io : IO, indent : String = " ") : Nil to_pretty_json, to_s(io : IO) : Nil
to_s : String to_s, to_yaml(io : IO) : Nil
to_yaml : String to_yaml, try(&) try, unsafe_as(type : T.class) forall T unsafe_as

Class methods inherited from class Object

from_json(string_or_io : String | IO, root : String)
from_json(string_or_io : String | IO) from_json, from_yaml(string_or_io : String | IO) from_yaml

Macros inherited from class Object

class_getter(*names, &block) class_getter, class_getter!(*names) class_getter!, class_getter?(*names, &block) class_getter?, class_property(*names, &block) class_property, class_property!(*names) class_property!, class_property?(*names, &block) class_property?, class_setter(*names) class_setter, def_clone def_clone, def_equals(*fields) def_equals, def_equals_and_hash(*fields) def_equals_and_hash, def_hash(*fields) def_hash, delegate(*methods, to object) delegate, forward_missing_to(delegate) forward_missing_to, getter(*names, &block) getter, getter!(*names) getter!, getter?(*names, &block) getter?, property(*names, &block) property, property!(*names) property!, property?(*names, &block) property?, setter(*names) setter

Constructor Detail

def self.new(name : String | Nil, offset : Int32, dst : Bool)Source

Creates a new Zone named name with offset from UTC in seconds. The parameter dst is used to declare this zone as daylight savings time.

If #name is nil, the formatted #offset will be used as #name (see #format).

Raises InvalidTimezoneOffsetError if seconds is outside the supported value range -89_999..93_599 seconds (-24:59:59 to +25:59:59).

Instance Method Detail

def dst? : BoolSource

Returns true if this zone offset is daylight savings time.

def format(io : IO, with_colon = true, with_seconds = :auto)Source

Prints #offset to io in the format +HH:mm:ss. When with_colon is false, the format is +HHmmss.

When with_seconds is false, seconds are omitted; when :auto, seconds are omitted if 0.

def format(with_colon = true, with_seconds = :auto)Source

Returns the #offset formatted as +HH:mm:ss. When with_colon is false, the format is +HHmmss.

When with_seconds is false, seconds are omitted; when :auto, seconds are omitted if 0.

def inspect(io : IO) : NilSource

Prints this Zone to io.

It contains the #name, hour-minute-second format (see #format), #offset in seconds and "DST" if #dst?, otherwise "STD".

def name : StringSource

Returns the name of the zone.

def offset : Int32Source

Returns the offset from UTC in seconds.

© 2012–2026 Manas Technology Solutions.
Licensed under the Apache License, Version 2.0.
https://crystal-lang.org/api/1.19.0/Time/Location/Zone.html