[time.zone.zonedtraits]

# 30 Time library [[time]](./#time)

## 30.11 Time zones [[time.zone]](time.zone#zonedtraits)

### 30.11.6 Class template zoned_traits [time.zone.zonedtraits]

namespace std::chrono {template<class T> struct zoned_traits {};}

[1](#1)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/time.tex#L9569)

zoned_traits provides a means for customizing
the behavior of zoned_time<Duration, TimeZonePtr> for the zoned_time default constructor,
and constructors taking string_view[.](#1.sentence-1)

A specialization for const time_zone* is provided by the implementation:namespace std::chrono {template<> struct zoned_traits<const time_zone*> {static const time_zone* default_zone(); static const time_zone* locate_zone(string_view name); };}

[🔗](#lib:default_zone,zoned_traits%3cconst_time_zone*%3e)

`static const time_zone* default_zone();
`

[2](#2)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/time.tex#L9590)

*Returns*: std​::​chrono​::​locate_zone("UTC")[.](#2.sentence-1)

[🔗](#lib:locate_zone,zoned_traits%3cconst_time_zone*%3e)

`static const time_zone* locate_zone(string_view name);
`

[3](#3)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/time.tex#L9601)

*Returns*: std​::​chrono​::​locate_zone(name)[.](#3.sentence-1)