# std::literals::chrono_literals Symbol Index

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< cpp‎ | symbol index

This page tries to list all the symbols that are available from the standard library (date and time library) in the namespace std::literals::chrono_literals. The symbols are written as follows:

- Function names with `()`.
- Templates with `<>`.

### Notes

These operators are declared in the namespace std::literals::chrono_literals, where both literals and chrono_literals are inline namespaces. Access to these operators can be gained with:

- using namespace std::literals,
- using namespace std::chrono_literals, or
- using namespace std::literals::chrono_literals.

In addition, within the namespace std::chrono, the directive using namespace literals::chrono_literals; is provided by the standard library, so that if a programmer uses using namespace std::chrono; to gain access to the classes in the chrono library, the corresponding literal operators become visible as well.

##

> `D H M N S U Y`

### D

`d` (since C++20)

### H

`h` (since C++14)

### M

`min` (since C++14)
`ms` (since C++14)

### N

`ns` (since C++14)

### S

`s` (since C++14)

### U

`us` (since C++14)

### Y

`y` (since C++20)

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