Standard US calendar with 3 Exception Dates at the bottom of the element.
<CALENDAR normalWeek="0000012" utcTimeOffset="-300" daylightSavingOffset="60">
<!-- Daylight saving / Standard time rules -->
<daylightSavingDateRule rule="3" month="3" day="8" hour="2" minute="0"
weekday="Sunday"/>
<standardDateRule rule="3" month="11" day="1" hour="2" minute="0"
weekday="Sunday"/>
<!-- New Year's Day -->
<calendarRule rule="1" month="1" day="1" dayType="2"/>
<!-- New Year (day after) -->
<calendarRule rule="2" month="1" day="2" weekday ="Monday" dayType="2"/>
<!-- Martin Luther King Jr. Day (3rd Mon in Jan) -->
<calendarRule rule="3" month="1" day="15" weekday ="Monday" dayType="2"/>
<!-- President's Day (3rd Mon in Feb) -->
<calendarRule rule="3" month="2" day="15" weekday ="Monday" dayType="2"/>
<!-- Memorial Day (Last Mon in May) -->
<calendarRule rule="3" month="5" day="25" weekday ="Monday" dayType="2"/>
<!-- July 3rd observed if Friday -->
<calendarRule rule="2" month="7" day="3" weekday ="Friday" dayType="2"/>
<!-- Independence Day -->
<calendarRule rule="1" month="7" day="4" dayType="2"/>
<!-- July 5th observed if Monday -->
<calendarRule rule="2" month="7" day="5" weekday ="Monday" dayType="2"/>
<!-- Labor Day (1st Mon in Sep) -->
<calendarRule rule="3" month="9" day="1" weekday ="Monday" dayType="2"/>
<!-- Before Veterans observed if Friday -->
<calendarRule rule="2" month="11" day="10" weekday ="Friday" dayType="1"/>
<!-- Veterans Day -->
<calendarRule rule="1" month="11" day="11" dayType="2"/>
<!-- After Veterans Day observed if Monday -->
<calendarRule rule="2" month="11" day="12" weekday ="Monday" dayType="1"/>
<!-- Thanksgiving Day (4th thu in Nov) -->
<calendarRule rule="3" month="11" day="22" weekday ="Thursday" dayType="2"/>
<!-- Before Christmas Day observed if Friday -->
<calendarRule rule="2" month="12" day="24" weekday ="Friday" dayType="1"/>
<!-- Christmas Day -->
<calendarRule rule="1" month="12" day="25" dayType="2"/>
<!-- After Christmas Day observed if Monday -->
<calendarRule rule="2" month="12" day="26" weekday ="Monday" dayType="1"/>
<!-- New Years Eve -->
<calendarRule rule="2" month="12" day="31" weekday ="Friday" dayType="1"/>
<!--Xmas market #2017-->
<calendarRule rule="1" month="12" day="16" dayType="5" />
<!--Xmas market #2017-->
<calendarRule rule="1" month="12" day="17" dayType="5" />
<!--Years end Match #2017-->
<calendarRule rule="1" month="12" day="30" dayType="4" />
</CALENDAR>
