Java Convert LocalDateTime to Another Time Zone

Tags: Java LocalDateTime Java 8 Java ZoneId

In this Java core tutorial we learn how to convert a java.time.LocalDateTime object from a specified time zone to another time zone in Java programming language.

How to convert LocalDateTime to Another Time Zone in Java

In Java, with a given LocalDateTime object we can follow these steps to convert it from a specified time zone to another time zone.

  • Step 1: Convert LocalDateTime object to ZonedDateTime object in source time zone using ZonedDateTime.of(LocalDateTime localDateTime, ZoneId zone) static method.
  • Step 2: Convert the above ZonedDateTime object to destination time zone using ZonedDateTime.withZoneSameInstant(ZoneId zone) method.
  • Step 3: Using ZonedDateTime.toLocalDateTime() method to get the final result which is a LocalDateTime object in destination time zone.

In the following example Java code we show how to use the above steps to convert a LocalDateTime object from America/Los_Angeles time zone to Europe/Paris time zone.

import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.ZonedDateTime;

public class ConvertLocalDateTimeToAnotherTimeZoneExample1 {
    public static void main(String... args) {
        LocalDateTime localDateTime = LocalDateTime.parse("2022-05-22T14:30:40");

        ZoneId fromZoneId = ZoneId.of("America/Los_Angeles");
        ZonedDateTime losAngelesZonedDateTime = ZonedDateTime.of(localDateTime, fromZoneId);
        ZoneId toZoneId = ZoneId.of("Europe/Paris");
        ZonedDateTime parisZonedDateTime = losAngelesZonedDateTime.withZoneSameInstant(toZoneId);
        LocalDateTime parisLocalDateTime = parisZonedDateTime.toLocalDateTime();

        System.out.println("Source LocalDateTime (in America/Los_Angeles time zone): " + localDateTime);
        System.out.println("Output LocalDateTime (in Europe/Paris time zone): " + parisLocalDateTime);

The output as below.
Source LocalDateTime (in America/Los_Angeles time zone): 2022-05-22T14:30:40
Output LocalDateTime (in Europe/Paris time zone): 2022-05-22T23:30:40

Happy Coding 😊

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