Examples of org.joda.time.DateTime.minusHours()

org.joda.time.DateTime.minusHours()
Returns a copy of this datetime minus the specified number of hours.
The calculation will subtract a duration equivalent to the number of hours expressed in milliseconds.
For example, if a spring daylight savings cutover is from 01:59 to 03:00 then subtracting one hour from 03:30 will result in 01:30. This is a duration of one hour earlier, even though the hour field value changed from 3 to 1.
The following three lines are identical in effect:
```
 DateTime subtracted = dt.minusHours(6); DateTime subtracted = dt.minus(Period.hours(6)); DateTime subtracted = dt.withFieldAdded(DurationFieldType.hours(), -6); 
```
This datetime instance is immutable and unaffected by this method call. @param hours the amount of hours to subtract, may be negative @return the new datetime minus the increased hours @since 1.1


    CountandraTestUtils.insertData("c=pti&s=us.georgia.augusta&t="
        + dt.minusHours(1).getMillis() + "&v=250");


    CountandraTestUtils.insertData("c=pti&s=us.california.lasvegas&t="
        + dt.minusHours(1).getMillis() + "&v=250");


  }


  @AfterClass
  public static void clear() {

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        TimeSignSpinner tss = getTimeSignSpinner();
        if (tss != null) {
            switch (tss.getValue()) {
                case AM:
                    if (result.getHourOfDay() == 12) {//12:xx am -> 00:xx
                        result = result.minusHours(12);
                    }
                    break;
                case PM:
                    if (result.getHourOfDay() != 12) {
                        result = result.plusHours(12);

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            } else if (dt.getSecondOfMinute() != 0) {
                return dt.minusSeconds(1);
            } else if (dt.getMinuteOfHour() != 0) {
                return dt.minusMinutes(1);
            } else if (dt.getHourOfDay() != 0) {
                return dt.minusHours(1);
            } else {
                return dt.minusDays(1);
            }
        default:
            return null;

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      DateTime HourStart = currentHour.plus(wallclockhourOffset);
      // if that results in a time instant that lies in the future, the
      // start of the current billing hour was in the previous
      // wall-clock hour
      if (now.isBefore(HourStart)) {
        HourStart = HourStart.minusHours(1);
      }
      return HourStart;
    }
  }

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            } else if (dt.getSecondOfMinute() != 0) {
                return dt.minusSeconds(1);
            } else if (dt.getMinuteOfHour() != 0) {
                return dt.minusMinutes(1);
            } else if (dt.getHourOfDay() != 0) {
                return dt.minusHours(1);
            } else {
                return dt.minusDays(1);
            }
        default:
            return null;

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        if (ctime.endsWith("y")) return dateTime.minusYears(getCtimeNumber(ctime)).getMillis();
        if (ctime.endsWith("M")) return dateTime.minusMonths(getCtimeNumber(ctime)).getMillis();
        if (ctime.endsWith("w")) return dateTime.minusWeeks(getCtimeNumber(ctime)).getMillis();
        if (ctime.endsWith("d")) return dateTime.minusDays(getCtimeNumber(ctime)).getMillis();
        if (ctime.endsWith("h")) return dateTime.minusHours(getCtimeNumber(ctime)).getMillis();
        if (ctime.endsWith("m")) return dateTime.minusMinutes(getCtimeNumber(ctime)).getMillis();
        if (ctime.endsWith("s")) return dateTime.minusSeconds(getCtimeNumber(ctime)).getMillis();
        throw new IllegalArgumentException("Invalid option for ctime: "+ctime);
    }

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        for (int i = 0; i < 10; i++) {
            Nicolive nicolive = new Nicolive();
            nicolive.setTitle("テスト" + i);
            nicolive.setDescription(new Text("テスト説明文" + i));
            DateTime datetime = new DateTime();
            datetime = datetime.minusHours(i);
            nicolive.setOpenTime(datetime.toDate());
            nicolive.setLink(new Link("http://ryu22e.org/" + i));
            nicolives.add(nicolive);
        }
        testDataKeys.addAll(Datastore.put(nicolives));

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        when(compositeGroupService.findGroup("local.1")).thenReturn(entityGroupB);
        
        final DateTime instant = new DateTime(1326734644000l, DateTimeZone.UTC); //just a random time
        
        //Create required date and time dimensions
        populateDateTimeDimensions(instant.minusHours(2), instant.plusHours(2), null);
        
        //Create aggregations
        final Map<K, T> createdAggrs = this.executeInTransaction(new Callable<Map<K, T>>() {
            @Override
            public Map<K, T> call() throws Exception {

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                    convertTimes(this.getEnrollmentEndDayDateYearMonthDay(), this.getEnrollmentEndTimeDateHourMinuteSecond());


            result.add(new EvaluationEventBean("Inicio das inscrições para " + description, enrollmentBegin, enrollmentBegin
                    .plusHours(1), false, null, url + "/login", null, executionCourses));


            result.add(new EvaluationEventBean("Fim das inscrições para " + description, enrollmentEnd.minusHours(1),
                    enrollmentEnd, false, null, url + "/login", null, executionCourses));
        }


        Set<Space> rooms = new HashSet<>();

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        List<Event> events = ImmutableList.of(
                new Event(monthBegin.plusHours(1).plusMinutes(1), "bob"),
                new Event(monthBegin.plusHours(1).plusMinutes(2), "bob"),
                new Event(monthBegin.plusHours(1).plusMinutes(3), "frank"),
                new Event(monthBegin.plusHours(5).plusMinutes(2), "bob"),
                new Event(monthBegin.minusHours(1).plusMinutes(10), "bob"),
                new Event(monthBegin.minusHours(1).plusMinutes(5), "frank"),
                new Event(monthBegin.minusHours(1).plusMinutes(30), "frank"));
        
        CubeWrapper cubeWrapper = new CubeWrapper();

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