# 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
*<>*.

` 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`

### A

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

`ambiguous_local_time` (since C++20)

`April` (since C++20)

`August` (since C++20)

### C

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

`choose` (since C++20)

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

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

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

### D

`day` (since C++20)

`December` (since C++20)

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

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

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

### F

`February` (since C++20)

`file_clock` (since C++20)

`file_seconds` (since C++20)

`file_time` (since C++20)

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

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

`Friday` (since C++20)

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

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

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

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

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

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

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

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

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

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

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

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

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

### G

`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)

### H

`high_resolution_clock` (since C++11)

`hours` (since C++11)

### I

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

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

### J

`January` (since C++20)

`July` (since C++20)

`June` (since C++20)

### L

`last` (since C++20)

`last_spec` (since C++20)

`leap` (since C++20)

`link` (since C++20)

`local_info` (since C++20)

`local_seconds` (since C++20)

`local_t` (since C++20)

`local_time` (since C++20)

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

### M

`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)

### N

`nanoseconds` (since C++11)

`nonexistent_local_time` (since C++20)

`November` (since C++20)

### O

`October` (since C++20)

### P

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

### R

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

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

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

### 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)

`system_clock` (since C++11)

`sys_time` (since C++20)

### T

`tai_clock` (since C++20)

`tai_seconds` (since C++20)

`tai_time` (since C++20)

`Thursday` (since C++20)

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

`Tuesday` (since C++20)

`tzdb` (since C++20)

`tzdb_list` (since C++20)

### U

`utc_clock` (since C++20)

`utc_seconds` (since C++20)

`utc_time` (since C++20)

### W

`Wednesday` (since C++20)

`weekday` (since C++20)

`weekday_indexed` (since C++20)

`weekday_last` (since C++20)

### 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)

### Z

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

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