ZDATEBADTIME, $ZDATE() time argument tttt is less than 0 or greater than 86399 (the $HOROLOG value for a second before midnight)
Run Time Error: The value of the time portion of the argument tttt to $ZDATE() is outside the range of values the function handles.
Action: Examine the code that created the value of tttt for errors or revise the design to create times within the range supported by $ZDATE().
