Timestamp conversion
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 Timestamp conversion

Timestamp conversion

Current Unix timestamp


Unix Timestamp
Beijing Time:


Beijing Time year month day : :
Unix timestamp:

About Unix timestamp


The timestamp is the number of seconds since January 1, 1970 (00:00:00 GMT). It is also called Unix Timestamp.

Unix timestamp, or Unix time, POSIX time, is a time representation, defined as the total number of seconds from 00:00:00 GMT, January 1, 1970 to the present. Unix timestamps are not only used in Unix systems and Unix like systems, but also widely used in many other operating systems.

How to obtain the current Unix timestamp in different programming languages?

Java time
JavaScript Math.round(new Date().getTime()/1000)
GetTime() returns the value in milliseconds
Microsoft . NET / C# epoch = (DateTime.Now.ToUniversalTime(). Ticks - 621355968000000000) / 10000000
MySQL SELECT unix_timestamp(now())
Perl time
PHP time()
PostgreSQL SELECT extract(epoch FROM now())
Python First import time, then time. time()
Ruby Get Unix timestamp: Time.now or Time.new
Display Unix timestamp: Time.now.to_i
SQL Server SELECT DATEDIFF(s, '1970-01-01 00:00:00', GETUTCDATE())
Unix / Linux date +%s
VBScript / ASP DateDiff("s", "01/01/1970 00:00:00", Now())
Other operating systems
(If Perl is installed in the system)
Command line status: perl - e "print time"

How to implement Unix timestamp → ordinary time in different programming languages?

Java String date = new java.text. SimpleDateFormat("dd/MM/yyyy HH:mm:ss").format(new java.util.Date(Unix timestamp * 1000))
JavaScript Var unixTimestamp=new Date (Unix timestamp * 1000), then commonTime=unixTimestamp. toLocaleString()
Linux date -d @Unix timestamp
MySQL from_unixtime(Unix timestamp)
Perl My $time=Unix timestamp, then my ($sec, $min, $hour, $day, $month, $year)=(localtime ($time)) [0,1,2,3,4,5,6]
PHP date('r', Unix timestamp)
PostgreSQL SELECT TIMESTAMP WITH TIME ZONE 'epoch' + Unix timestamp) * INTERVAL '1 second';
Python First import time, then time. gmtime (Unix timestamp)
Ruby Time.at(Unix timestamp)
SQL Server DATEADD(s, Unix timestamp, '1970-01-01 00:00:00')
VBScript / ASP DateAdd("s", Unix timestamp, "01/01/1970 00:00:00")
Other operating systems
(If Perl is installed in the system)
Command line status: perl - e "print scale (localtime (Unix timestamp))"

How to implement common time → Unix timestamp in different programming languages?

Java long epoch = new java.text. SimpleDateFormat("dd/MM/yyyy HH:mm:ss").parse("01/01/1970 01:00:00");
JavaScript var commonTime = new Date(Date.UTC(year, month - 1, day, hour, minute, second))
MySQL SELECT unix_timestamp(time)
Time format: YYYY-MM-DD HH: MM: SS or YYMMDD or YYYYMMDD
Perl First use Time:: Local, then my $time=timelocal ($sec, $min, $hour, $day, $month, $year);
PHP mktime(hour, minute, second, day, month, year)
PostgreSQL SELECT extract(epoch FROM date('YYYY-MM-DD HH:MM:SS'));
Python Import time first and then int (time. mktime (time. strptime ('YYYY-MM-DD HH: MM: SS', '% Y -% m -% d% H:% M:% S'))
Ruby Time.local(year, month, day, hour, minute, second)
SQL Server SELECT DATEDIFF(s, '1970-01-01 00:00:00', time)
Unix / Linux date +%s -d"Jan 1, 1970 00:00:01"
VBScript / ASP DateDiff("s", "01/01/1970 00:00:00", time)
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