SP1950&quot;     numeric   seconds past 1950 component of time
   &quot;SP2000&quot;     numeric   seconds past 2000 component of time
   &quot;YR&quot;         numeric   last two digits of year component of time
   &quot;YYYY&quot;       numeric   year component of time
   &quot;WEEKDAY&quot;    string    upper case day of week
   &quot;Weekday&quot;    string    capitalized day of week
   &quot;weekday&quot;    string    lower case day of week
   &quot;WKD&quot;        string    upper case three letter ab