DstRuleType

Bit map encoded rule from which is calculated the start or end time, within the current year, to which daylight savings time offset must be applied.

The rule encoding:

Bits 0 - 11: seconds 0 - 3599

Bits 12 - 16: hours 0 - 23

Bits 17 - 19: day of the week 0 = not applicable, 1 - 7 (Monday = 1)

Bits 20 - 24: day of the month 0 = not applicable, 1 - 31

Bits 25 - 27: operator (detailed below)

Bits 28 - 31: month 1 - 12

Rule value of 0xFFFFFFFF means rule processing/DST correction is disabled.

The operators:

0: DST starts/ends on the Day of the Month

1: DST starts/ends on the Day of the Week that is on or after the Day of the Month

2: DST starts/ends on the first occurrence of the Day of the Week in a month

3: DST starts/ends on the second occurrence of the Day of the Week in a month

4: DST starts/ends on the third occurrence of the Day of the Week in a month

5: DST starts/ends on the forth occurrence of the Day of the Week in a month

6: DST starts/ends on the fifth occurrence of the Day of the Week in a month

7: DST starts/ends on the last occurrence of the Day of the Week in a month

An example: DST starts on third Friday in March at 1:45 AM. The rule...

Seconds: 2700

Hours: 1

Day of Week: 5

Day of Month: 0

Operator: 4

Month: 3

None

Inherits from

Descendant classes

None