Indicates the date to the best of the device’s knowledge. The Date type is a series of 4 one-number elements. The first number is the year (for example, 2005); the second number is the month (1..12, 1=January); the third is the day of month (1..31). To maintain compatibility with BACnet protocol, a fourth number contains the day of week (1=Monday). A value of FF * (asterisk) in any of the elements indicates the value is not specified.
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