Wrong holidays file makes scheduler infinite loop

In any case, you can easily achieve what you want by just commenting out the entire holidays file. It will give you 24 hour primetime.

Thanks, and I investigated more various pattens:

Case 0) Comment out prime table, but rest YEAR line:

*
YEAR  2019
*
* Prime/Nonprime Table
*
*   Prime Non-Prime
* Day   Start Start
*
*  weekday 0600  1730
*  saturday  none  all
*  sunday  none  all
*
* Day of  Calendar  Company
* Year    Date    Holiday
*

is bad. It also causes infinite loop.

Case 1) Comment out entire holidays file as you say:

* YEAR  2019
*
* Prime/Nonprime Table
*
*   Prime Non-Prime
* Day   Start Start
*
*  weekday 0600  1730
*  saturday  none  all
*  sunday  none  all
*

is good. Yes, i got 24h primetime,
However, the following warnings are recorded repeatedly.
because of conf.holiday_year == 0.

 31 01/15/2019 16:25:23;0004;pbs_sched;Fil;holidays;The holiday file is out of date; please update it.
 32 01/15/2019 16:25:46;0004;pbs_sched;Fil;holidays;The holiday file is out of date; please update it.
 33 01/15/2019 16:25:48;0004;pbs_sched;Fil;holidays;The holiday file is out of date; please update it.
 34 01/15/2019 16:26:31;0004;pbs_sched;Fil;holidays;The holiday file is out of date; please update it.
 35 01/15/2019 16:27:04;0004;pbs_sched;Fil;holidays;The holiday file is out of date; please update it.
 36 01/15/2019 16:27:04;0004;pbs_sched;Fil;holidays;The holiday file is out of date; please update it.
 37 01/15/2019 16:27:04;0004;pbs_sched;Fil;holidays;The holiday file is out of date; please update it.
 38 01/15/2019 16:31:38;0004;pbs_sched;Fil;holidays;The holiday file is out of date; please update it.
 39 01/15/2019 16:31:38;0004;pbs_sched;Fil;holidays;The holiday file is out of date; please update it.
 40 01/15/2019 16:41:38;0004;pbs_sched;Fil;holidays;The holiday file is out of date; please update it.

this warnings is produced by fifo.c line 174 (schedinit):

if ((tmptr != NULL) && ((tmptr->tm_year + 1900) > conf.holiday_year)) 

Case 2)

*
YEAR  2019
*
* Prime/Nonprime Table
*
*   Prime Non-Prime
* Day   Start Start
*
  weekday all  none
  saturday  all  none
  sunday  all  none
*

is good. And above warning is NOT reported!
But I suspect a little slower than case 1.

Which do you recommend case 1 or 2 ?

Sincerely,