code: @Nonnull
    public static CronScheduleBuilder dailyAtHourAndMinute (final int hour, final int minute)
    {
      DateBuilder.validateHour (hour);
      DateBuilder.validateMinute (minute);
  
      final String cronExpression = "0 " + minute + " " + hour + " ? * *";
  
      return _cronScheduleNoParseException (cronExpression);
    }
docs: Create a CronScheduleBuilder with a cron-expression that sets the schedule
  to fire every day at the given time (hour and minute).
  
  @param hour
  the hour of day to fire
  @param minute
  the minute of the given hour to fire
  @return the new CronScheduleBuilder
  @see CronExpression