Title says it all, I guess. Many people asked for it, so here we go. You can now specify the next_t parameter of JobQueue.put as datetime.datetime or datetime.time, so the job will run at exactly the specified (date and) time.

>>> from datetime import datetime, time, timedelta
>>> job_queue.put(happy_new_year_job, next_t=datetime(2017, 1, 1))
>>> job_queue.put(alarm_clock_job, next_t=time(8, 30))
>>> midnight_job = Job(midnight_callback, timedelta(days=1))
>>> job_queue.put(midnight_job, next_t=time(0, 0))

If you pass a datetime.time object for next_t and it's already later than the specified time (eg it's 10:00 and next_t is time(8, 30)), the job will execute the next day.

I made the interval parameter for Job optional, so you can just leave it for non-repeating jobs (however, you must explicitly pass repeat=False)