Time, timestamp conversion


当前时间戳： 北京时间：

Timestamp-> date
时间戳：
日期：
Beijing Time-> Timestamp
北京时间：
时间戳：
Second to day \ hour \ minute \ second
秒：
天时分秒： 
时间戳是指格林威治时间1970年01月01日00时00分00秒(北京时间1970年01月01日08时00分00秒)起至现在的总秒数
时间转秒  Seconds
1 hour 3600 seconds
1 day 86400 seconds
1 week 604800 seconds
1 month (30.44 days)  2629743 seconds
1 year (365.24 days)   31556926 seconds
GET the current time in each language
PHP time()
Python import time; time.time()
Ruby Time.now (or Time.new). To display the epoch: Time.now.to_i
Perl time
Java long epoch = System.currentTimeMillis()/1000;
C# var epoch = (DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc)).TotalSeconds;
Objective-C [[NSDate date] timeIntervalSince1970]; (returns double) or NSString *currentTimestamp = [NSString stringWithFormat:@"%f", [[NSDate date] timeIntervalSince1970]];
C++11 double now = std::chrono::duration_cast<std::chrono::milliseconds>(std::chrono::system_clock::now().time_since_epoch()).count();
VBScript/ASP DateDiff("s", "01/01/1970 00:00:00", Now())
AutoIT _DateDiff('s', "1970/01/01 00:00:00", _NowCalc())
Delphi Epoch := DateTimetoUnix(Now); Tested in Delphi 2010.
R as.numeric(Sys.time())
Erlang/OTP erlang:system_time(seconds). (version 18+), older versions: calendar:datetime_to_gregorian_seconds(calendar:universal_time())-719528*24*3600.
MySQL SELECT unix_timestamp(now())
PostgreSQL SELECT extract(epoch FROM now());
SQLite SELECT strftime('%s', 'now');
Oracle PL/SQL SELECT (CAST(SYS_EXTRACT_UTC(SYSTIMESTAMP) AS DATE) - TO_DATE('01/01/1970','DD/MM/YYYY')) * 24 * 60 * 60 FROM DUAL;
SQL Server SELECT DATEDIFF(s, '1970-01-01 00:00:00', GETUTCDATE())
IBM Informix SELECT dbinfo('utc_current') FROM sysmaster:sysdual;
JavaScript Math.round(new Date().getTime()/1000.0) getTime() returns time in milliseconds.
Visual FoxPro DATETIME() - {^1970/01/01 00:00:00} Warning: time zones not handled correctly
Go time.Now().Unix()
Adobe ColdFusion <cfset epochTime = left(getTickcount(), 10)>
Tcl/Tk clock seconds
Unix/Linux Shell date +%s
PowerShell [int][double]::Parse((Get-Date (get-date).touniversaltime() -UFormat %s))
Other OS's Command line: perl -e "print time" (If Perl is installed on your system)
Dates in each language are converted into timestamps
PHP date(output format, epoch); Output format example: 'r' = RFC 2822 date
Python import time; time.strftime("%a, %d %b %Y %H:%M:%S +0000", time.localtime(epoch)) Replace time.localtime with time.gmtime for GMT time. Or using datetime: import datetime; datetime.datetime.utcfromtimestamp(epoch).replace(tzinfo=datetime.timezone.utc)
Ruby Time.at(epoch)
C# private string epoch2string(int epoch) {
return new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc).AddSeconds(epoch).ToShortDateString(); }
Perl Use the
Java String date = new java.text.SimpleDateFormat("MM/dd/yyyy HH:mm:ss").format(new java.util.Date (epoch*1000));
VBScript/ASP DateAdd("s", epoch, "01/01/1970 00:00:00")
AutoIT _DateAdd("s", $EpochSeconds , "1970/01/01 00:00:00")
Delphi myString := DateTimeToStr(UnixToDateTime(Epoch)); Where Epoch is a signed integer.
Objective-C NSDate * myDate = [NSDate dateWithTimeIntervalSince1970:epoch]; NSLog(@"%@", date);
R as.POSIXct(epoch, origin="1970-01-01", tz="GMT")
Adobe ColdFusion DateAdd("s",epoch,"1/1/1970");
MySQL FROM_UNIXTIME(epoch, optional output format) Default output format is YYY-MM-DD HH:MM:SS. If you need support for negative timestamps: DATE_FORMAT(DATE_ADD(FROM_UNIXTIME(0), interval -315619200 second),"%Y-%m-%d") (replace -315619200 with epoch)
PostgreSQL PostgreSQL version 8.1 and higher: SELECT to_timestamp(epoch); Older versions: SELECT TIMESTAMP WITH TIME ZONE 'epoch' + epoch * INTERVAL '1 second';
SQLite SELECT datetime(epoch_to_convert, 'unixepoch'); or local timezone: SELECT datetime(epoch_to_convert, 'unixepoch', 'localtime');
Oracle PL/SQL SELECT to_date('01-JAN-1970','dd-mon-yyyy')+(1526357743/60/60/24) from dual
Replace 1526357743 with epoch.
SQL Server DATEADD(s, epoch, '1970-01-01 00:00:00')
IBM Informix SELECT dbinfo('utc_to_datetime',epoch) FROM sysmaster:sysdual;
Microsoft Excel / LibreOffice Calc =(A1 / 86400) + 25569 Format the result cell for date/time, the result will be in GMT time (A1 is the cell with the epoch number). For other time zones: =((A1 +/- time zone adjustment) / 86400) + 25569.
Crystal Reports DateAdd("s", {EpochTimeStampField}-14400, #1/1/1970 00:00:00#) -14400 used for Eastern Standard Time.
JavaScript
MATLAB datestr(719529+TimeInSeconds/86400,'dd-mmm-yyyy HH:MM:SS')
IBM PureData System for Analytics select 996673954::int4::abstime::timestamp;
Unix/Linux Shell date -d @1520000000 Replace 1520000000 with your epoch, needs recent version of 'date'. Replace '-d' with '-ud' for GMT/UTC time.
Mac OS X date -j -r 1520000000
PowerShell Function get-epochDate ($epochDate) { [timezone]::CurrentTimeZone.ToLocalTime(([datetime]'1/1/1970').AddSeconds($epochDate)) }, then use: get-epochDate 1520000000. Works for Windows PowerShell v1 and v2
Other OS's Command line: perl -e "print scalar(localtime(epoch))" (If Perl is installed) Replace 'localtime' with 'gmtime' for GMT/UTC time.
Timestamps are converted into dates in each language
PHP date(output format, epoch); Output format example: 'r' = RFC 2822 date
Python import time; time.strftime("%a, %d %b %Y %H:%M:%S +0000", time.localtime(epoch)) Replace time.localtime with time.gmtime for GMT time. Or using datetime: import datetime; datetime.datetime.utcfromtimestamp(epoch).replace(tzinfo=datetime.timezone.utc)
Ruby Time.at(epoch)
C# private string epoch2string(int epoch) {
return new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc).AddSeconds(epoch).ToShortDateString(); }
Java String date = new java.text.SimpleDateFormat("MM/dd/yyyy HH:mm:ss").format(new java.util.Date (epoch*1000));
VBScript/ASP DateAdd("s", epoch, "01/01/1970 00:00:00")
AutoIT _DateAdd("s", $EpochSeconds , "1970/01/01 00:00:00")
Delphi myString := DateTimeToStr(UnixToDateTime(Epoch)); Where Epoch is a signed integer.
Objective-C NSDate * myDate = [NSDate dateWithTimeIntervalSince1970:epoch]; NSLog(@"%@", date);
R as.POSIXct(epoch, origin="1970-01-01", tz="GMT")
Adobe ColdFusion DateAdd("s",epoch,"1/1/1970");
MySQL FROM_UNIXTIME(epoch, optional output format) Default output format is YYY-MM-DD HH:MM:SS. If you need support for negative timestamps: DATE_FORMAT(DATE_ADD(FROM_UNIXTIME(0), interval -315619200 second),"%Y-%m-%d") (replace -315619200 with epoch)
PostgreSQL PostgreSQL version 8.1 and higher: SELECT to_timestamp(epoch); Older versions: SELECT TIMESTAMP WITH TIME ZONE 'epoch' + epoch * INTERVAL '1 second';
SQLite SELECT datetime(epoch_to_convert, 'unixepoch'); or local timezone: SELECT datetime(epoch_to_convert, 'unixepoch', 'localtime');
Oracle PL/SQL SELECT to_date('01-JAN-1970','dd-mon-yyyy')+(1526357743/60/60/24) from dual
Replace 1526357743 with epoch.
SQL Server DATEADD(s, epoch, '1970-01-01 00:00:00')
IBM Informix SELECT dbinfo('utc_to_datetime',epoch) FROM sysmaster:sysdual;
Microsoft Excel / LibreOffice Calc =(A1 / 86400) + 25569 Format the result cell for date/time, the result will be in GMT time (A1 is the cell with the epoch number). For other time zones: =((A1 +/- time zone adjustment) / 86400) + 25569.
Crystal Reports DateAdd("s", {EpochTimeStampField}-14400, #1/1/1970 00:00:00#) -14400 used for Eastern Standard Time.
MATLAB datestr(719529+TimeInSeconds/86400,'dd-mmm-yyyy HH:MM:SS')
IBM PureData System for Analytics select 996673954::int4::abstime::timestamp;
Unix/Linux Shell date -d @1520000000 Replace 1520000000 with your epoch, needs recent version of 'date'. Replace '-d' with '-ud' for GMT/UTC time.
Mac OS X date -j -r 1520000000
PowerShell Function get-epochDate ($epochDate) { [timezone]::CurrentTimeZone.ToLocalTime(([datetime]'1/1/1970').AddSeconds($epochDate)) }, then use: get-epochDate 1520000000. Works for Windows PowerShell v1 and v2
Other OS's Command line: perl -e "print scalar(localtime(epoch))" (If Perl is installed) Replace 'localtime' with 'gmtime' for GMT/UTC time.
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