sched.add_job("myjob.execflow:start_exec", CronTrigger(timezone=utc, day="2nd mon", week="*/2", minute=30, hour=01), args=(vname,), id=vname,replace_existing=True)

>>> job = sched.get_jobs()[-1]
>>> print job.next_run_time
2018-08-13 01:30:00+00:00

>>> job.trigger.fields
[BaseField('year', '*'), BaseField('month', '*'), DayOfMonthField('day', '2nd mon'), WeekField('week', '*/2'), DayOfWeekField('day_of_week', '*'), BaseField('hour', '1'), BaseField('minute', '30'), BaseField('second', '0')]