I use Zabbix for monitoring Windows services. Some services has a time, when it's mast be stopped. I create two triggers:

trigger 1 - Service state. f.e. MSSQL

{Template__MSSQL:service_state["MSSQLSERVER"].last(0)}

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trigger 2 - this trigger change status to TRUE in defined time. f.e. down time of MSSQL from 3:25 to 10:45 (

{SHEDULER:agent.ping.time(0)}

>032500)&(

{SHEDULER:agent.ping.time(0)}

<104500)

trigger 1 is depend on trigger 2. When service is down before defined time, trigger 1 change status to TRUE and I will see it on a map. It's a correct.
In defined time trigger 2 change status to TRUE, but trigger 1 don't change status to FALSE and I will see on a map an error, but it's not error.