We have a test case with exactly 30 days for the PROMIS10 Assessment that is failing, but if we add a day and make it 31 days then it passes.

Has Encounter with Initial and Follow Up PROMIS10 Assessments

• exists ( from
  "Qualifying Encounters" ValidEncounters,
  "Time PROMIS10 Total Assessment Completed" InitialPROMIS10Time,
  "Time PROMIS10 Total Assessment Completed" FollowupPROMIS10Time
  where ValidEncounters.relevantPeriod ends 180 days or more before
  end of "Measurement Period"
  and InitialPROMIS10Time 14 days or less on or before
  end of ValidEncounters.relevantPeriod
  and FollowupPROMIS10Time in Interval[date from InitialPROMIS10Time + 30 days, date from InitialPROMIS10Time + 180 days]
  return ValidEncounters