asctime()

Return the date and time as a character string.

Syntax

asctime( clock ,[format])

Parameter

Parameter

Definition

clock

reference to the clock or timer whose value should be converted to a character string The clock is most commonly time().

format

optional format symbol for the asctime() output string. For some common field symbols, see the following table for Format Symbols for asctime()

Default 
24-character string with the following format: 
Sun Sep 16 01:03:52 1973

Description

The asctime() function returns the date/time of clock as a character string. It is equivalent to the C library asctime() function except that the PSL asctime()function adjusts the value to the local timezone. If format is given, asctime()returns the date/time string in the specified format.

Note

The format field specifiers are similar to those used in the C librarystrftime() function and are dependent on the operating system. For format field specifiers, see the C programming reference for your operating system. 

 Format Symbols for asctime() 

Format

Description

%%

allows you to use a percent sign (%) in the format of a date string

%a

locale's abbreviated name of the day of week

%A

locale's full name of the day of week

%b

locale's abbreviated name of the month

%B

locale's full name of the month

%c

locale's appropriate date and time representation

%C

data and time as %c

%d

day of month [1,31]; single digits are preceded by 0

%D

date as %m/%d/%y

%e

day of month [1,31]; single digits are preceded by a space

%h

locale's abbreviated name of the month

%H

hour (24-hour clock) [0,23]; single digits are preceded by 0

%I

hour (12-hour clock) [1,12]; single digits are preceded by 0

%j

day of year [1,366]; single digits are preceded by 0

%k

hour (24-hour clock) [0,23]; single digits are preceded by a space

%l

hour (12-hour clock) [1,12]; single digits are preceded by a space

%m

month as a decimal number [1,12]; single digits are preceded by 0

%M

minute [0,59]; leading zero is permitted but not required

%n

insert a new line

%p

locale's equivalent of either a.m. or p.m.

%r

appropriate time representation in 12-hour clock format with %p

%R

time as %H:%M

%S

seconds [0,61]

%t

insert a tab

%T

time as %H:%M:%S

%u

day of week as a decimal number [1,7], with 1 representing Monday

%U

week of the year as a decimal number [0,53], with Sunday as the first day of week 1

%V

week of the year as a decimal number [01,53], with Monday as the first day of the week If the week containing 1 January has four or more days in the new year, it is considered week 1; otherwise, it is week 53 of the previous year, and the next week is week 1.

%w

day of week as a decimal number [0,6], with 0 representing Sunday

%W

week of the year as a decimal number [0,53], with Monday as the first day of week 1

%x

locale's appropriate date representation

%X

locale's appropriate time representation

%y

year within century [0,99]

%Y

year, including the century (for example 1993)

%Z

abbreviated or full name of time zone, or no bytes if no information of the time zone exists

%Ec

locale's alternative appropriate date and time representation

%EC

name of the base year (period) in the locale's alternative representation

%Ex

locale's alternative date representation

%EX

locale's alternative time representation

%Ey

offset from %EC (year only) in the locale's alternative representation

%EY

alternative representation of the year in full

%Od

day of the month using the locale's alternative numeric symbols

%Oe

same as %Od

%OH

hour (24-hour clock) using the locale's alternative numeric symbols

%OI

hour (12-hour clock) using the locale's alternative numeric symbols

%Om

month using the locale's alternative numeric symbols

%OM

minutes using the locale's alternative numeric symbols

%OS

seconds using the locale's alternative numeric symbols

%OU

week of the year (Sunday as the first day of the week) using the locale's alternative numeric symbols

%Ow

day of week (Sunday=0) using the locale's alternative numeric symbols

%OW

week of the year (Monday as the first day of the week) using the locale's alternative numeric symbols

%Oy

year (offset from %C) in the locale's alternative representation and using the locale's alternative numeric symbols

Example

The following PSL script shows how the asctime() function can translate the computer system time value into a familiar Gregorian date and time:

raw_time = time();
default_output = asctime(raw_time); 
printf("raw time is %d, default asctime() output is %s\n",raw_time,default_output); 
output_with_format = asctime(raw_time, "Day is %A, Month is %B, Time is %X\nTimezone is %Z");
printf("%s\n",output_with_format);


The preceding example returns the following output:

raw time is 825948788, default asctime() output is Mon Mar 4 08:13:08 1996
Day is Monday, Month is March, Time is 08:13:08 Timezone is CST
Was this page helpful? Yes No Submitting... Thank you

Comments