diff -r 4816d766a08a -r f345bda72bc4 Symbian3/PDK/Source/GUID-FE2E8E58-6656-534E-A052-095AF559A482.dita --- a/Symbian3/PDK/Source/GUID-FE2E8E58-6656-534E-A052-095AF559A482.dita Tue Mar 30 11:42:04 2010 +0100 +++ b/Symbian3/PDK/Source/GUID-FE2E8E58-6656-534E-A052-095AF559A482.dita Tue Mar 30 11:56:28 2010 +0100 @@ -1,45 +1,45 @@ - - - - - -Alarm -Time Formats -

The Alarm Server supports two types of time formats used to express the -expiry time of an alarm:

- -

The Alarm Server maintains a queue of alarms and the format of these alarms -may be either fixed or floating time format.

-

Hence, if the user adds an alarm defining one of its characteristics as TAlarmCharacteristics::EAlarmCharacteristicsIsFixed, -then it is added in the alarm queue as fixed time format based alarm.

-

-

NOTE:

- + + + + + +Alarm +Time Formats +

The Alarm Server supports two types of time formats used to express the +expiry time of an alarm:

+
    +
  • Fixed time format - +The alarm expires at the given UTC time and has no associated UTC offset. +The alarm is not rescheduled when an UTC offset or DST change occur.

  • +
  • Floating time format - +The alarm expires at the given local (wall clock) time in the current UTC +offset and are re-scheduled when either the UTC offset or DST change occurs.

  • +
+

The Alarm Server maintains a queue of alarms and the format of these alarms +may be either fixed or floating time format.

+

Hence, if the user adds an alarm defining one of its characteristics as TAlarmCharacteristics::EAlarmCharacteristicsIsFixed, +then it is added in the alarm queue as fixed time format based alarm.

+

+

NOTE:

+
    +
  • UTC time is +the non-secure system time in UTC (UTC time range is from 0-24, so after 12, +the time is expressed in PM).

    Standard Time = UTC Time + Timezone/UTC +offset

    Wall Clock/local time = UTC Time + Timezone/UTC offset +± DST offset

  • +
  • All alarms (irrespective +of the time format) undergo rescheduling and re-evaluation of their next due +time (considering their repeat definition) only when either system time/date +or workdays change.

  • +
  • Only the floating time +format based alarms undergo re-scheduling and re-evaluation of their next +due time if the system time/date, workdays, UTC offset changes or DST rollover +event occurs.

  • +
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