FIX: Extend bookmark cutoff time for "Later Today" to 5pm (PR #9419)

As per discussions at

  • users can now use the Later Today option for bookmark reminders up until 5PM
  • the time for later today maxes out at 6pm, so any time it is used after 3pm it is maxed to 6pm
  • round to hour instead of half-hour for Later Today as well


cool, lets give this a shot!