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How to Convert from .Net TimeZone to MySQL TimeZone


How to Convert from .Net TimeZone to MySQL TimeZone

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How to Convert from .Net TimeZone to MySQL TimeZone
Tag : mysql , By : user158193
Date : November 21 2020, 01:01 AM

like below fixes the issue MySQL uses the IANA time zone standard. You can read about MySQL's time zone support here. However, you should recognize that on Windows, MySQL's time zone data is severely outdated. There is an open issue here. (Because of this, you may want to reconsider whether you really need to use the MySQL Convert_TZ function, or if you can just store UTC values and convert in your .NET code.)
You can read about the different types of time zones in the timezone tag wiki.
string tz = DateTimeZoneProviders.Tzdb.GetSystemDefault().Id;

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How can I shift timezone of Date object created in local timezone to target timezone in GWT client?


Tag : gwt , By : Kilimanjaro
Date : March 29 2020, 07:55 AM
it should still fix some issue Your code looks about right. Using DateTimeFormat.parse might make the intention clearer to a casual reader. It's not very often that you are given timezones A and B and one Date object, and you have to produce a new Date object that, when formatted in B, has the same time as the original when formatted in A.

Convert date in one timezone to another timezone using timezone abbreviations


Tag : javascript , By : Nickolas
Date : March 29 2020, 07:55 AM
will be helpful for those in need I am working on a web application where a user can set his/her timezone in the application which is further used in the application for various date-time conversions. The selected timezone can be different from user's locale timezone. , Here you go:
// calculate local time in a different city given the city's UTC offset
function calcTime(city, offset) {

    // create Date object for current location
    var date = new Date();

    // convert to msec
    // add local time zone offset 
    // get UTC time in msec
    var utc = date.getTime() + (date.getTimezoneOffset() * 60000);

    // create new Date object for different city
    // using supplied offset
    var newDate = new Date(utc + (3600000 * offset));

    // return time as a string
    return "The local time in " + city + " is " + newDate.toLocaleString();
}

// get Bombay time
console.log(calcTime('Bombay', '+5.5'));

// get Singapore time
console.log(calcTime('Singapore', '+8'));

// get London time
console.log(calcTime('London', '+1'));

Moment JS - convert user-submitted date/time/timezone to timezone-independent UTC


Tag : javascript , By : Deepak Poondi
Date : March 29 2020, 07:55 AM
I hope this helps you . You can use the tz to create a date in user entered timezone, for which there is no direct way in javascript date object. Once you have the date reconstructed with moment.tz go ahead and convert it to utc, now format it however you want.
Also, check your solution(shown in Question) in a browser running from a different timezone, I am pretty sure that it will give different results.
let req = {};
 req.body = {date: "09/06/2016",
             time: "07:41:00",
             tz: "America/New_York"};

const a = moment
           .tz(req.body.date+ " " + req.body.time,"MM/DD/YYYY HH:mm:ss" ,req.body.tz)
           .utc()
           .format();

console.log(a);
<script src="http://momentjs.com/downloads/moment.min.js"></script>
<script src="http://momentjs.com/downloads/moment-timezone-with-data-2010-2020.min.js"></script>

moment-timezones.js, how to convert date in spesific timezone to utc, disregarding my local timezone?


Tag : javascript , By : cnemelka
Date : March 29 2020, 07:55 AM
This might help you i found a function that does what i was trying to do, it belongs to the momentjs library itself: utcOffset(n) sets the offset to n.
(i also had to explicitly write the date string format correctly, thanks VincenzoC)
const dateInNY = moment.tz(xlsxDate, "M/D/YYYY h:mm a",  "America/New_York");
const dateUTC = dateInNY.utcOffset(0).toDate();
const dateInNY = moment.tz(xlsxDate, "M/D/YYYY h:mm a",  "America/New_York");
const dateUTC = dateInNY.toDate();

When the timezone is adjusted to user's timezone when retrieving data from TIMESTAMP WITH LOCAL TIMEZONE column?


Tag : oracle , By : JoeKaras
Date : December 27 2020, 04:45 PM
I hope this helps you . The database does it. If you store the same nominal moment in time in timestamp, timestamp with time zone and timestamp with local time zone columns:
create table t42 (id number,
  ts timestamp,
  tstz timestamp with time zone,
  tsltz timestamp with local time zone
);
insert into t42 (id, ts, tstz, tsltz)
values (1,
  timestamp '2019-08-13 07:13:20 UTC',
  timestamp '2019-08-13 07:13:20 UTC',
  timestamp '2019-08-13 07:13:20 UTC'
);
insert into t42 (id, ts, tstz, tsltz)
values (2,
  timestamp '2019-08-13 12:34:56.789 Australia/Sydney',
  timestamp '2019-08-13 12:34:56.789 Australia/Sydney',
  timestamp '2019-08-13 12:34:56.789 Australia/Sydney'
);

alter session set time_zone = 'Europe/London';

select id, ts, tstz, tsltz from t42 order by id;

ID TS                      TSTZ                                     TSLTZ                  
-- ----------------------- ---------------------------------------- -----------------------
 1 2019-08-13 07:13:20.000 2019-08-13 07:13:20.000 UTC              2019-08-13 03:13:20.000
 2 2019-08-13 12:34:56.789 2019-08-13 12:34:56.789 AUSTRALIA/SYDNEY 2019-08-12 22:34:56.789
select id, 'TS' as col, to_char(ts, 'YYYY-MM-DD HH24:MI:SS.FF3') as value, dump(ts) as dumped from t42
union all
select id, 'TSTZ', to_char(tstz, 'YYYY-MM-DD HH24:MI:SS.FF3 TZR'), dump(tstz) from t42
union all
select id, 'TSLTZ', to_char(tsltz, 'YYYY-MM-DD HH24:MI:SS.FF3 TZR'), dump(tsltz) from t42
order by 1, 4;

ID COL   VALUE                                    DUMPED                                                 
-- ----- ---------------------------------------- -------------------------------------------------------
 1 TS    2019-08-13 07:13:20.000                  Typ=180 Len=7: 120,119,8,13,8,14,21                    
 1 TSTZ  2019-08-13 07:13:20.000 UTC              Typ=181 Len=13: 120,119,8,13,8,14,21,0,0,0,0,208,4     
 1 TSLTZ 2019-08-13 08:13:20.000 EUROPE/LONDON    Typ=231 Len=7: 120,119,8,13,8,14,21                    
 2 TS    2019-08-13 12:34:56.789                  Typ=180 Len=11: 120,119,8,13,13,35,57,47,7,47,64       
 2 TSTZ  2019-08-13 12:34:56.789 AUSTRALIA/SYDNEY Typ=181 Len=13: 120,119,8,13,3,35,57,47,7,47,64,133,128
 2 TSLTZ 2019-08-13 03:34:56.789 EUROPE/LONDON    Typ=231 Len=11: 120,119,8,13,3,35,57,47,7,47,64        
select dbtimezone, sessiontimezone from dual;

DBTIME SESSIONTIMEZONE                                                            
------ ---------------------------------------------------------------------------
+00:00 Europe/London                                                              
alter session set time_zone = 'America/New_York';

select id, 'TS' as col, to_char(ts, 'YYYY-MM-DD HH24:MI:SS.FF3') as value, dump(ts) as dumped from t42
union all
select id, 'TSTZ', to_char(tstz, 'YYYY-MM-DD HH24:MI:SS.FF3 TZR'), dump(tstz) from t42
union all
select id, 'TSLTZ', to_char(tsltz, 'YYYY-MM-DD HH24:MI:SS.FF3 TZR'), dump(tsltz) from t42
order by 1, 4;

ID COL   VALUE                                    DUMPED                                                 
-- ----- ---------------------------------------- -------------------------------------------------------
 1 TS    2019-08-13 07:13:20.000                  Typ=180 Len=7: 120,119,8,13,8,14,21                    
 1 TSTZ  2019-08-13 07:13:20.000 UTC              Typ=181 Len=13: 120,119,8,13,8,14,21,0,0,0,0,208,4     
 1 TSLTZ 2019-08-13 03:13:20.000 AMERICA/NEW_YORK Typ=231 Len=7: 120,119,8,13,8,14,21                    
 2 TS    2019-08-13 12:34:56.789                  Typ=180 Len=11: 120,119,8,13,13,35,57,47,7,47,64       
 2 TSTZ  2019-08-13 12:34:56.789 AUSTRALIA/SYDNEY Typ=181 Len=13: 120,119,8,13,3,35,57,47,7,47,64,133,128
 2 TSLTZ 2019-08-12 22:34:56.789 AMERICA/NEW_YORK Typ=231 Len=11: 120,119,8,13,3,35,57,47,7,47,64        
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