exact eastern time with seconds

Linux time zone details and common time functions time and time zone The entire earth is divided into 24 time zones, each time zone has its own local time. ø  UTC Time and GMT time We can think of Greenwich Mean Time (GMT = UTC), GMT and

Linux/unix-time timestamp processing conversion functionThe time function under LinuxWe can often use time in programming, such as getting the system time (to get the system's year, month, day, hour, minute, second, week, etc.), or to do something

First, the Linux common time correlation function-asctime,ctime,getttimeofday,gmtime,localtime,mktime,settimeofday,timeAsctime: Converting dates to stringsCTime: Converts a number of seconds into a stringGettimeofday: Gets the time and date based on

Date functionDate functions manipulate Date values (fields of date type), timestamp values (TIMESTAMP, TIMESTAMP with time ZONE, and TIMESTAMP with the fields of the local time ZONE type), and interval values (INTERVAL day to SECOND and INTERVAL

Linux time management functions in LInux, the difference between UTC time and LocalTime must be clarified for time management. 1) UTC: GMT (GreenwichMeanTime) 2) localTime is the default time zone configuration file of the local time system. The

Linux Time management functions in LInux, the difference between UTC Time and Local Time must be clarified for Time management. 1) UTC: GMT (Greenwich Mean Time) 2) local Time is the default time zone configuration file of the Local Time system. The

Function category:1. Set the time: settimeofday, tzset2. Get time: time, ftime, gettimeofday3. Time Format Conversion: mktime, strftime; gmtime, localtime; asctime, ctime4. Others: Clock, difftime Asctime: represents the time and date in string

Select the optimized data typeMySQL supports a very high number of data types, and choosing the right data type is critical to gaining performance. No matter what type of data you store, here are a few simple principles that can help you make a

---------------------------------------------Date/Time function-------------------------------------------------1:sysdateThe current date used to get the systemSELECT sysdate from DUAL;--2:add_monthsAdd or subtract a monthSELECT To_char (add_months (

First, mathematical