Local Time Clock

Features in this modul may not deal with data and timing before the era or far into the distant future. 2. When receiving %y style information, the strptime() can analyze two-digit years. It is Coordinated Universal Time (formerly known as Greenwich Mean Time, or GMT for short). The DST is summer time, an adaptation of the time zone by (usually) one full hours during part of the year.

Summer time regulations are magical (according to local law) and can vary from year to year. Because the C libary has a local rule chart (often taken from a system script due to flexibility), it is the only true wisdom resource in this area. For example, on most Unix computers the clock "ticks" only 50 or 100 Times per second.

However, the accuracy of time() and sleep() is better than their Unix equivalents: timings are given as floats, time() gives back the most exact time available (with Unix gettimeofday() if available), and sleep() accepts a time with a non-zero break (Unix select() is used to do this if available).

And the time value given back by gmtime(), localtime() and strptime() and acceptable by asctime(), mktime() and strftime() is a series of 9 whole numbers. Returns gmtime(), localtime() and strptime() also provide attributes for single field name. You can use the following features to switch between time displays: Converts a struct_time or Tupel that represents a time passed by gmtime() or localtime() into a character string of the following form:

Otherwise, the actual time passed by localtime() is used. Local information is not used by asctime(). Under Unix, the actual CPU time is given as a decimal point number in seconds. Accuracy and thus the significance of "processor time" depend on that of the C functions of the same name.

Under Windows this feature gives back the seconds of the clock that have passed since the first call of this feature as a decimal number, using the Win32 QueryPerformanceCounter() feature. Gets the clk_id of the thread-specific timer for the specified thread_id. Delivers the accuracy of the specified clock clk_id. You can find a listing of the acceptable Clock ID Constants for clk_id in the Clock ID Constants section.

Returns the time of the specified clock clk_id. You can find a listing of the acceptable Clock ID Constants for clk_id in the Clock ID Constants section. Like clock_gettime (), but returns time as a nanosecond. Sets the time of the specified clock clk_id. Currently, CLOCK_REALTIME is the only value for clk_id that is acceptable. Like clock_settime (), but adjust time with nano seconds.

Translate a time in seconds since the era into a character chain that represents the local time. is not specified or None, the actual time will be used that is given back by time(). ctime(secs) corresponds to asctime(localtime(secs)). Local information is not used by ctime(). Returns information about the specified clock as a name space item.

The clock name and the corresponding value reading features are supported: Name of the basic C-function with which the clock value was determined. Possible Clock ID Constant readings can be found under Clock ID Constant. Converts a time, in seconds since the era, into a struct_time value in VTC where the decimal point is always zero.

is not specified or None, the actual time will be used that is passed back by time(). The same as gmtime(), but converted to local time. is not specified or None, the actual time will be used that is passed back by time(). Sets the daylight saving time to 1 if it is valid for the specified time.

It is the reverse feature of localtime(). It' s arguement is the struct_time or full 9 tuple (since the gst flags are needed; use -1 as the gst flags if it is unknown) which will express the time in local time and not unTC. There is a floating-point number returned for time( ) compatibleness.

However, the oldest date on which it can create a time is platform-dependent. Returns the value (in fractions of seconds) of a monotonous clock, i.e. a clock that cannot go backwards. Clock is not affected by system clocks. If the value returns an indefinite datum, only the differences between the results of successive invocations are used.

Increase an intern era (reference time) by 232 if an overload is recognized. Like monotonous (), but with a payback time in nano seconds. Returns the value (in fractions of seconds) of a power meter, i.e. a clock with the highest available accuracy to give a measurement over a brief period of time. Contains the time passed in sleeping and is system-wide.

They do not contain the time that has passed during sleeping. If the value returns an indefinite datum, only the differences between the results of successive invocations are used. Same as process_time (), but returns time in nano seconds. It can be a floating-point number to specify a more accurate sleeping time.

Exposure time may be shorter than required because each detected pulse terminates the sleep() after the detection of that pulse. In addition, due to the planning of other activities in the system, the interruption time can be any amount longer than required. Converts a Tupel or struct_time that represents a time passed by gmtime() or localtime() to a character set by the form arguments.

Otherwise, the actual time given by localtime() is used. The file must be a substring. is a right point for each item in the timeuple; if it is normally unlawful, the value is set to a proper item. You can embed the following statements in the form strings.

These are displayed without the option of specifying width and accuracy and are substituted by the specified character in the stringtime () result: %aLocale's shortened day of the week name. %ALocale's full day of the week name. %bLocale's shortened name of the months. %BLocale's full name of the current year. %cLocale's appropriate date and time notation. %Hour (24-hour clock) as hexadecimal number[00,23].

%IHour (12-hour clock) as hexadecimal number[01,12]. %xLocale's appropriate date notation. %XLocale's appropriate time notation. %zTime zone offsets indicative of a +HMM or -HHMM shape plus or minus time differential of UTC/GMT where HR represent hourly decimals and MIN represent [-23:59, +23:59] decimals. %ZTTtime area name ( no character if there is no time area).

Actually, the area is between 0 and 61; the value 60 is true in time stamps that represent leak seconds, and the value 61 is historically backed. "%a, %b %Y %H:%M:%S +0000",'Thu, 28 Jun 2001 14:17:15 +0000' Extra directives may be available on certain plattforms, but only those mentioned here have a standard ANSI C significance. To see the full list of formats code support on your plattforms, see the strftime(3) document.

Normally the panel width is 2, except %j where it is 3. Parse a character string that represents a time according to a specified size. Returns a struct_time as it is given by gmtime() or localtime(). It uses the same statements as strftime(); by default, it is set to "%a %b %d %H:%M:%S %YY", which is the same as the default value given by ctime().

ValueError is triggered if character chains cannot be formatted correctly or if they contain surplus information after they have been formatted. Character chain and character file must both be character chains. "Struct_time (tm_year=2000, tm_mon=11, us_mday=30, tm_hour=0, tm_min=0, tm_min=0, tm_min=0, The substitution of the %Z direction is done on the basis of the value included in username and whether light is truth.

This is the time value order types returning from gmtime(), localtime() and strptime(). When calling mktime(), tm_isdst can be 1 if summer time is enabled and 0 if it is not enabled. Returns the time in seconds since the era as a decimal point number. Specifically, the date of the era and the way it handles milliseconds depends on the operating system.

For Windows and most Unix operating system, the era is January 1, 1970, 00:00:00:00 (UTC) and lease seconds are not taken into account for the time in seconds since the age. Unix time is generally called this. In order to find out what the era is on a particular trading deck, take a look at gmtime(0).

Notice that although time is always given back as a float, not all instruments deliver time with better accuracy than 1 second. Whilst this feature normally does not give back declining numbers, it may give back a lower value than a prior call if the system clock was reset between the two callbacks.

Time( ) returns a number that can be transformed into a more commonly used time form (i.e. year, months, days, hours, etc.) in accordance with local time, by giving it to the gmtime() command, or in accordance with local time, by giving it to the localtime() command. A struct_time objekt is return in both cases, from which the calender date component can be retrieved as an attribute.

Returns the value (in fractions of seconds) of the total system and custom CPU time of the active threads. They do not contain the time that has passed during sleeping. If the value returns a value, the value's fiducial is not defined, so only the differences between the results of successive invocations in the same threads are used.

Windows, Linux, and Unix operating system that support CLOCK_THREAD_CPUTIME_ID. and Same as thread_time (), but returned time as a nanosecond. Same as time (), but gives back time as an integral number of nano seconds since the age. Resets the time change rule used by the libraries routine. You can also change the values of the tags of the time zone (from the TZ environmental tag), time zone (non-DST seconds western of UTC), old zone (DST seconds western of UTC), and natural light (to 0 if this time zone has no summer time rule, or to non-zero if there is a time, past, present, or present if summer time applies).

While in many cases modifying the TZ environmental variables can influence the performance of a function such as localtime() without invoking tzset(), you should not rely on this behaviour. TZ environmental variables have the default size (spaces added for better clarity): One of the following is the starting and ending date format:

Tag zero is a Sunday. Time has the same size as offsets except that no prefix ('-' or'+') is permitted. If the time is not specified, the preset is 02:00:00:00. TZ''Egypt' ... These constant are used as parameter for clock_getres() and clock_gettime(). The same as Clock Monotonic, except it contains the time the system is exposed.

It allows an application to obtain a suspended monotonous clock without having to worry about the compile time problems of CLOCK_REALTIME that can occur when changing the time with settimeofday() or similar disruptions. Solaris has a CLOCK_HIGHRES clock that tries to use an optimum resource and can provide a near nano second solution.

Click_High is the non-adjustable, high-resolution clock. Non-adjustable clock that is a monotonous time since an indefinite start point. It is similar to Adobe Reader but provides full control over a hardware-based timeout that is not dependent on NTP customizations. The CPU timer is threadspecific. Time, the time of which is the time the system is operating and has not been interrupted, enabling precise operation time measurements in both increments and intervals.

is the only argument that can be sent to clock_settime(). Systemwide real-time clock. Adjusting this clock will require appropriate permissions. This is the local daylight saving time zone in seconds westward of downtown UTC, if any. If the local summer time zone is situated eastwards from unTC (as in Western Europe, incl. Great Britain), this is negatively.

This is the time zone offsets of the local (non-DST) time zone, in seconds westwards of downtown, (negative in most Western European countries, favorable in the US, zero in the UK). The first is the name of the local non-DST time zone, the second is the name of the local DST time zone.

The value for the above time zone constant (old zone, sunlight, time zone and tzname) is defined by the time zone rule that applies at the time of loading the modules or at the last call of tzset() and may be wrong for past time. We recommend using the results of tm_gmtoff and tm_zone from localtime() to get time zone information.

Local internationalisation service modules. Territory settings affect the way many formats are interpreted in strftime() and strptime().