# std::chrono Symbol Index

This page tries to list all the symbols that are available from the *Standard Library* in the namespace `std::chrono::`

. The symbols are written as follows:

- Function names with
`()`

. - Templates with
`<>`

.

## Contents |

## [edit] ` A C D F G H I J L M N O P R S T U W Y Z`

`A C D F G H I J L M N O P R S T U W Y Z`

### [edit] A

`abs<>()` (since C++17)

`ambiguous_local_time` (since C++20)

`April` (since C++20)

`August` (since C++20)

### [edit] C

`ceil<>()` (std::chrono::duration) (since C++17)

`ceil<>()` (std::chrono::time_point) (since C++17)

`choose` (since C++20)

`clock_cast<>()` (since C++20)

`clock_time_conversion<>` (since C++20)

`current_zone()` (since C++20)

### [edit] D

`day` (since C++20)

`December` (since C++20)

`duration<>` (since C++11)

`duration_cast<>()` (since C++11)

`duration_values<>` (since C++11)

### [edit] F

`February` (since C++20)

`file_clock` (since C++20)

`file_seconds` (since C++20)

`file_time` (since C++20)

`floor<>()` (std::chrono::duration) (since C++17)

`floor<>()` (std::chrono::time_point) (since C++17)

`Friday` (since C++20)

`from_stream<>()` (std::chrono::day) (since C++20)

`from_stream<>()` (std::chrono::file_time) (since C++20)

`from_stream<>()` (std::chrono::gps_time) (since C++20)

`from_stream<>()` (std::chrono::local_time) (since C++20)

`from_stream<>()` (std::chrono::month) (since C++20)

`from_stream<>()` (std::chrono::month_day) (since C++20)

`from_stream<>()` (std::chrono::sys_time) (since C++20)

`from_stream<>()` (std::chrono::tai_time) (since C++20)

`from_stream<>()` (std::chrono::utc_time) (since C++20)

`from_stream<>()` (std::chrono::weekday) (since C++20)

`from_stream<>()` (std::chrono::year) (since C++20)

`from_stream<>()` (std::chrono::year_month) (since C++20)

`from_stream<>()` (std::chrono::year_month_day) (since C++20)

### [edit] G

`get_leap_second_info` (since C++20)

`get_tzdb()` (since C++20)

`get_tzdb_list()` (since C++20)

`gps_clock` (since C++20)

`gps_seconds` (since C++20)

`gps_time` (since C++20)

### [edit] H

`hh_mm_ss<>` (since C++20)

`high_resolution_clock` (since C++11)

`hours` (since C++11)

### [edit] I

`is_am` (since C++20)

`is_clock<>` (since C++20)

`is_clock_v<>` (since C++20)

`is_pm` (since C++20)

### [edit] J

`January` (since C++20)

`July` (since C++20)

`June` (since C++20)

### [edit] L

`last` (since C++20)

`last_spec` (since C++20)

`leap_second` (since C++20)

`leap_second_info` (since C++20)

`local_info` (since C++20)

`local_seconds` (since C++20)

`local_t` (since C++20)

`local_time` (since C++20)

`local_time_format<>()` (since C++20)

`locate_zone()` (since C++20)

### [edit] M

`make12` (since C++20)

`make24` (since C++20)

`March` (since C++20)

`May` (since C++20)

`microseconds` (since C++11)

`milliseconds` (since C++11)

`minutes` (since C++11)

`Monday` (since C++20)

`month` (since C++20)

`month_day` (since C++20)

`month_day_last` (since C++20)

`month_weekday` (since C++20)

`month_weekday_last` (since C++20)

### [edit] N

`nanoseconds` (since C++11)

`nonexistent_local_time` (since C++20)

`November` (since C++20)

### [edit] O

`October` (since C++20)

### [edit] P

`parse<>()` (since C++20)

### [edit] R

`reload_tzdb()` (since C++20)

`remote_version()` (since C++20)

`round<>()` (std::chrono::duration) (since C++17)

`round<>()` (std::chrono::time_point) (since C++17)

### [edit] S

`Saturday` (since C++20)

`seconds` (since C++11)

`September` (since C++20)

`steady_clock` (since C++11)

`Sunday` (since C++20)

`sys_info` (since C++20)

`sys_days` (since C++20)

`sys_seconds` (since C++20)

`sys_time` (since C++20)

`system_clock` (since C++11)

### [edit] T

`tai_clock` (since C++20)

`tai_seconds` (since C++20)

`tai_time` (since C++20)

`Thursday` (since C++20)

`time_point<>` (since C++11)

`time_point_cast<>()` (since C++11)

`time_zone()` (since C++20)

`time_zone_link` (since C++20)

`treat_as_floating_point<>` (since C++11)

`treat_as_floating_point_v<>` (since C++17)

`Tuesday` (since C++20)

`tzdb` (since C++20)

`tzdb_list` (since C++20)

### [edit] U

`utc_clock` (since C++20)

`utc_seconds` (since C++20)

`utc_time` (since C++20)

### [edit] W

`Wednesday` (since C++20)

`weekday` (since C++20)

`weekday_indexed` (since C++20)

`weekday_last` (since C++20)

### [edit] Y

`year` (since C++20)

`year_month` (since C++20)

`year_month_day` (since C++20)

`year_month_day_last` (since C++20)

`year_month_weekday` (since C++20)

`year_month_weekday_last` (since C++20)

### [edit] Z

`zoned_seconds` (since C++20)

`zoned_time<>` (since C++20)

`zoned_traits<>` (since C++20)