# std::chrono::tzdb_list

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< cpp‎ | chrono

Defined in header `<chrono>` |  |
class tzdb_list; |  | (since C++20)

`tzdb_list` is a singleton list of std::chrono::tzdbs, each of which represents a copy of the IANA time zone database. Users cannot construct a `tzdb_list` and can only obtain access to one via the std::chrono::get_tzdb_list free function.

### Member types

Member type | Definition
`const_iterator` | constant LegacyForwardIterator whose value type is std::chrono::tzdb

### Member functions

(constructor) (deleted) | copy constructor is defined as deleted (public member function)
operator= (deleted) | copy assignment operator is defined as deleted (public member function)
front | access the first element (public member function)
erase_after | erases an element after an element (public member function)
begin cbegin | returns an iterator to the beginning of the list (public member function)
end cend | returns an iterator past the end of the list (public member function)

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