Styjun

Did the CIA blow up a Siberian pipeline in 1982?

What is the origin of Scooby-Doo's name?

What is the oldest commercial MS-DOS program that can run on modern versions of Windows without third-party software?

What are the pros and cons for the two possible "gear directions" when parking the car on a hill?

Story about a space war, and a human prisoner of war captured by alien enemy

How to make clear to people I don't want to answer their "Where are you from?" question?

Excluding a rectangular region from an image in FITS

What can I do with a research project that is my university’s intellectual property?

Why isn't my calculation that we should be able to see the sun well beyond the observable universe valid?

Prime sieve in Python

Intuition for the role of diffeomorphisms

Heavily limited premature compiler translates text into excecutable python code

Is it possible to get a mortgage with a custom duration in the US?

Constitutionality of U.S. Democratic Presidential Candidate's Supreme Court Suggestion

Why is it recommended to mix yogurt starter with a small amount of milk before adding to the entire batch?

Can Ogre clerics use Purify Food and Drink on humanoid characters?

Hit the Bulls Eye with T in the Center

Why is "Congress shall have power to enforce this article by appropriate legislation" necessary?

Is declining an undergraduate award which causes me discomfort appropriate?

What do they call philosophers in China?

Is there any proof that high saturation and contrast makes a picture more appealing in social media?

Count All Possible Unique Combinations of Letters in a Word

Why don't countries like Japan just print more money?

"Permanent resident of UK” for a British travel insurance in the US

Convert UTC timestamp to local timestamp

Android get Current UTC timeGet date in current timezone in javaHow to convert a Drawable to a Bitmap?Converting pixels to dpCalendar getTimeInMillis() is timezone-dependent?Converting UTC timestamp to local device timestampandroid sqlite save and retrieve utc and convert to localHow to get another Calendar result from same instance?new Date() returns local time instead of UTCManually Set System Clock Screws Up UTC in Android and IOSHow to get 2 date objects holding the current time, one in GMT and the other in localConvert hour minute string time to utc and vice versa

.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty height:90px;width:728px;box-sizing:border-box;

0

I want to get the local time in millseconds from UTC milliseconds... I tried following code.. But it return same UTC time instead of local time.

private long getLocalTimeFromUTC(long aLong) 
 TimeZone timeZone = TimeZone.getTimeZone("UTC");
 Calendar calendar = Calendar.getInstance(timeZone);
 calendar.setTimeInMillis(aLong);
 Calendar calendar1 = Calendar.getInstance(TimeZone.getDefault());
 calendar1.setTimeInMillis(calendar.getTimeInMillis());
 return calendar1.getTimeInMillis();

Actually I don't want DateFormat String, I need milliseconds back... That's why I used Calendar instance.

android

share|improve this question

edited Mar 25 at 8:01

Gunaseelan

asked Mar 25 at 7:36

GunaseelanGunaseelan

7,48294696

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  stackoverflow.com/a/24808474/1042124
  
  – Rahul Kumar
  Mar 25 at 7:48
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Possible duplicate of Android get Current UTC time
  
  – ADM
  Mar 25 at 7:50
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @RahulKumar I have edited my question as I need milliseconds only back.
  
  – Gunaseelan
  Mar 25 at 8:02
  

  
  
  
  

add a comment | 

0

I want to get the local time in millseconds from UTC milliseconds... I tried following code.. But it return same UTC time instead of local time.

private long getLocalTimeFromUTC(long aLong) 
 TimeZone timeZone = TimeZone.getTimeZone("UTC");
 Calendar calendar = Calendar.getInstance(timeZone);
 calendar.setTimeInMillis(aLong);
 Calendar calendar1 = Calendar.getInstance(TimeZone.getDefault());
 calendar1.setTimeInMillis(calendar.getTimeInMillis());
 return calendar1.getTimeInMillis();

Actually I don't want DateFormat String, I need milliseconds back... That's why I used Calendar instance.

android

share|improve this question

edited Mar 25 at 8:01

Gunaseelan

asked Mar 25 at 7:36

GunaseelanGunaseelan

7,48294696

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  stackoverflow.com/a/24808474/1042124
  
  – Rahul Kumar
  Mar 25 at 7:48
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Possible duplicate of Android get Current UTC time
  
  – ADM
  Mar 25 at 7:50
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @RahulKumar I have edited my question as I need milliseconds only back.
  
  – Gunaseelan
  Mar 25 at 8:02
  

  
  
  
  

add a comment | 

I want to get the local time in millseconds from UTC milliseconds... I tried following code.. But it return same UTC time instead of local time.

private long getLocalTimeFromUTC(long aLong) 
 TimeZone timeZone = TimeZone.getTimeZone("UTC");
 Calendar calendar = Calendar.getInstance(timeZone);
 calendar.setTimeInMillis(aLong);
 Calendar calendar1 = Calendar.getInstance(TimeZone.getDefault());
 calendar1.setTimeInMillis(calendar.getTimeInMillis());
 return calendar1.getTimeInMillis();

Actually I don't want DateFormat String, I need milliseconds back... That's why I used Calendar instance.

android

share|improve this question

edited Mar 25 at 8:01

Gunaseelan

asked Mar 25 at 7:36

GunaseelanGunaseelan

7,48294696

private long getLocalTimeFromUTC(long aLong) 
 TimeZone timeZone = TimeZone.getTimeZone("UTC");
 Calendar calendar = Calendar.getInstance(timeZone);
 calendar.setTimeInMillis(aLong);
 Calendar calendar1 = Calendar.getInstance(TimeZone.getDefault());
 calendar1.setTimeInMillis(calendar.getTimeInMillis());
 return calendar1.getTimeInMillis();

android

android

share|improve this question

edited Mar 25 at 8:01

Gunaseelan

asked Mar 25 at 7:36

GunaseelanGunaseelan

7,48294696

share|improve this question

edited Mar 25 at 8:01

Gunaseelan

asked Mar 25 at 7:36

GunaseelanGunaseelan

7,48294696

asked Mar 25 at 7:36

GunaseelanGunaseelan

7,48294696

asked Mar 25 at 7:36

GunaseelanGunaseelan

7,48294696

1 Answer
1

active

oldest

votes

0

The code you wrote creates two Calendars with the same timestamp in two different time zones, so of course the value of getTimeInMillis will be the same. There are three components to a date - the time zone, the milliseconds since epoch, and the date fields - and when you set two of these, the third is derived from them. So what you should be setting in addition to the time zone, is the date fields, so that the milliseconds value can be derived.

private long getLocalTimeFromUTC(long aLong) 
 TimeZone timeZone = TimeZone.getTimeZone("UTC");
 Calendar calendar = Calendar.getInstance(timeZone);
 calendar.setTimeInMillis(System.currentTimeMillis());

 Calendar calendar1 = Calendar.getInstance(TimeZone.getDefault());
 // 7 date fields: YEAR, MONTH, DAY_OF_MONTH, 
 // HOUR_OF_DAY, MINUTE, SECOND, and MILLISECOND
 // they come from "import static java.util.Calendar.*;"
 calendar1.set(calendar.get(YEAR), 
 calendar.get(MONTH),
 calendar.get(DAY_OF_MONTH),
 calendar.get(HOUR_OF_DAY),
 calendar.get(MINUTE),
 calendar.get(SECOND));
 calendar1.set(MILLISECOND, calendar.get(MILLISECOND));
 return calendar1.getTimeInMillis();

share|improve this answer

answered Mar 25 at 9:28

Leo AsoLeo Aso

5,65311430

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  1553509009000 is my UTC time, When I convert it back using your answer I'm getting 1553489209000. Which is one hour extra.
  
  – Gunaseelan
  Mar 25 at 10:21
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  1553489209000 - 1553509009000 is not 1 hour extra, it's 5 and a half hours extra, which is correct if you live in India. Recheck your calculation.
  
  – Leo Aso
  Mar 25 at 12:00
  

  
  
  
  

add a comment | 

Your Answer

StackExchange.ifUsing("editor", function ()
StackExchange.using("externalEditor", function ()
StackExchange.using("snippets", function ()
StackExchange.snippets.init();
);
);
, "code-snippets");

StackExchange.ready(function()
var channelOptions =
tags: "".split(" "),
id: "1"
;
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function()
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled)
StackExchange.using("snippets", function()
createEditor();
);

else
createEditor();

);

function createEditor()
StackExchange.prepareEditor(
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader:
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
,
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
);



);

draft saved

draft discarded

Sign up or log in

StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);

Sign up using Google

Sign up using Facebook

Sign up using Email and Password

Post as a guest

Name

Email

Required, but never shown

StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f55333110%2fconvert-utc-timestamp-to-local-timestamp%23new-answer', 'question_page');

);

Post as a guest

Name

Email

Required, but never shown

0

The code you wrote creates two Calendars with the same timestamp in two different time zones, so of course the value of getTimeInMillis will be the same. There are three components to a date - the time zone, the milliseconds since epoch, and the date fields - and when you set two of these, the third is derived from them. So what you should be setting in addition to the time zone, is the date fields, so that the milliseconds value can be derived.

private long getLocalTimeFromUTC(long aLong) 
 TimeZone timeZone = TimeZone.getTimeZone("UTC");
 Calendar calendar = Calendar.getInstance(timeZone);
 calendar.setTimeInMillis(System.currentTimeMillis());

 Calendar calendar1 = Calendar.getInstance(TimeZone.getDefault());
 // 7 date fields: YEAR, MONTH, DAY_OF_MONTH, 
 // HOUR_OF_DAY, MINUTE, SECOND, and MILLISECOND
 // they come from "import static java.util.Calendar.*;"
 calendar1.set(calendar.get(YEAR), 
 calendar.get(MONTH),
 calendar.get(DAY_OF_MONTH),
 calendar.get(HOUR_OF_DAY),
 calendar.get(MINUTE),
 calendar.get(SECOND));
 calendar1.set(MILLISECOND, calendar.get(MILLISECOND));
 return calendar1.getTimeInMillis();

share|improve this answer

answered Mar 25 at 9:28

Leo AsoLeo Aso

5,65311430

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  1553509009000 is my UTC time, When I convert it back using your answer I'm getting 1553489209000. Which is one hour extra.
  
  – Gunaseelan
  Mar 25 at 10:21
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  1553489209000 - 1553509009000 is not 1 hour extra, it's 5 and a half hours extra, which is correct if you live in India. Recheck your calculation.
  
  – Leo Aso
  Mar 25 at 12:00
  

  
  
  
  

add a comment | 

0

The code you wrote creates two Calendars with the same timestamp in two different time zones, so of course the value of getTimeInMillis will be the same. There are three components to a date - the time zone, the milliseconds since epoch, and the date fields - and when you set two of these, the third is derived from them. So what you should be setting in addition to the time zone, is the date fields, so that the milliseconds value can be derived.

private long getLocalTimeFromUTC(long aLong) 
 TimeZone timeZone = TimeZone.getTimeZone("UTC");
 Calendar calendar = Calendar.getInstance(timeZone);
 calendar.setTimeInMillis(System.currentTimeMillis());

 Calendar calendar1 = Calendar.getInstance(TimeZone.getDefault());
 // 7 date fields: YEAR, MONTH, DAY_OF_MONTH, 
 // HOUR_OF_DAY, MINUTE, SECOND, and MILLISECOND
 // they come from "import static java.util.Calendar.*;"
 calendar1.set(calendar.get(YEAR), 
 calendar.get(MONTH),
 calendar.get(DAY_OF_MONTH),
 calendar.get(HOUR_OF_DAY),
 calendar.get(MINUTE),
 calendar.get(SECOND));
 calendar1.set(MILLISECOND, calendar.get(MILLISECOND));
 return calendar1.getTimeInMillis();

share|improve this answer

answered Mar 25 at 9:28

Leo AsoLeo Aso

5,65311430

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  1553509009000 is my UTC time, When I convert it back using your answer I'm getting 1553489209000. Which is one hour extra.
  
  – Gunaseelan
  Mar 25 at 10:21
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  1553489209000 - 1553509009000 is not 1 hour extra, it's 5 and a half hours extra, which is correct if you live in India. Recheck your calculation.
  
  – Leo Aso
  Mar 25 at 12:00
  

  
  
  
  

add a comment | 

The code you wrote creates two Calendars with the same timestamp in two different time zones, so of course the value of getTimeInMillis will be the same. There are three components to a date - the time zone, the milliseconds since epoch, and the date fields - and when you set two of these, the third is derived from them. So what you should be setting in addition to the time zone, is the date fields, so that the milliseconds value can be derived.

private long getLocalTimeFromUTC(long aLong) 
 TimeZone timeZone = TimeZone.getTimeZone("UTC");
 Calendar calendar = Calendar.getInstance(timeZone);
 calendar.setTimeInMillis(System.currentTimeMillis());

 Calendar calendar1 = Calendar.getInstance(TimeZone.getDefault());
 // 7 date fields: YEAR, MONTH, DAY_OF_MONTH, 
 // HOUR_OF_DAY, MINUTE, SECOND, and MILLISECOND
 // they come from "import static java.util.Calendar.*;"
 calendar1.set(calendar.get(YEAR), 
 calendar.get(MONTH),
 calendar.get(DAY_OF_MONTH),
 calendar.get(HOUR_OF_DAY),
 calendar.get(MINUTE),
 calendar.get(SECOND));
 calendar1.set(MILLISECOND, calendar.get(MILLISECOND));
 return calendar1.getTimeInMillis();

share|improve this answer

answered Mar 25 at 9:28

Leo AsoLeo Aso

5,65311430

private long getLocalTimeFromUTC(long aLong) 
 TimeZone timeZone = TimeZone.getTimeZone("UTC");
 Calendar calendar = Calendar.getInstance(timeZone);
 calendar.setTimeInMillis(System.currentTimeMillis());

 Calendar calendar1 = Calendar.getInstance(TimeZone.getDefault());
 // 7 date fields: YEAR, MONTH, DAY_OF_MONTH, 
 // HOUR_OF_DAY, MINUTE, SECOND, and MILLISECOND
 // they come from "import static java.util.Calendar.*;"
 calendar1.set(calendar.get(YEAR), 
 calendar.get(MONTH),
 calendar.get(DAY_OF_MONTH),
 calendar.get(HOUR_OF_DAY),
 calendar.get(MINUTE),
 calendar.get(SECOND));
 calendar1.set(MILLISECOND, calendar.get(MILLISECOND));
 return calendar1.getTimeInMillis();

share|improve this answer

answered Mar 25 at 9:28

Leo AsoLeo Aso

5,65311430

answered Mar 25 at 9:28

Leo AsoLeo Aso

5,65311430

answered Mar 25 at 9:28

Leo AsoLeo Aso

5,65311430