Grey and white regions in charts

[mahmood]

Hi
Zabbix is showing grey and white backgrounds which I guess it tries to resemble day and night times. However, there are some problems with that.
As you can see below, the intervals of night differ. Why?



Moreover, the day time is less than night time.



I guess there should be somewhere to define such day and night regions.
Any guess?

[tim.mooney]

Administration->General->Working Time

It's not day & night, it's "business hours" vs. non-business hours.

[provels]

Wow, another whole set of dropdowns I've never seen. Had been wondering same. I just set mine to show 7 days/AM/PM (1-7,00:00-12:00)