History Interval becomes different in wrfout d01

[rabbanidu93]

I'm running 3 domains where history intervals are 60, 15, 5 sometimes 60, 30, 10.
Every time for domain 1 the interval becomes like following,

Times =
"2019-03-31_00:00:00",
"2019-03-31_01:00:18",
"2019-03-31_02:00:36",
"2019-03-31_03:00:00",
"2019-03-31_04:00:18",
"2019-03-31_05:00:36",
"2019-03-31_06:00:00",
"2019-03-31_07:00:18",
"2019-03-31_08:00:36",
"2019-03-31_09:00:00",
"2019-03-31_10:00:18",
"2019-03-31_11:00:36",
"2019-03-31_12:00:00",
"2019-03-31_13:00:18",
"2019-03-31_14:00:36",
"2019-03-31_15:00:00",
"2019-03-31_16:00:18",
"2019-03-31_17:00:36",
"2019-03-31_18:00:00",
"2019-03-31_19:00:18",
"2019-03-31_20:00:36",
"2019-03-31_21:00:00",
"2019-03-31_22:00:18",
"2019-03-31_23:00:36",
"2019-04-01_00:00:00" ;

where does this extra 18 second come from in the interval?
What should i do for getting the output 1 hour interval for domain 1 while running 3 domains together???

my namelist is attached here.

 

[mgduda]

I've moved this topic from the MPAS-Atmosphere forum to WRF Model / Running WRF / wrf.exe.

 

[Ming Chen]

Please set the option "adjust_output_times = .true. " in your namelist.input (&time_control), then try again.