The fuzzytime() trigger function allows to check for item value in/out of a specific time range, compared to the time on the Zabbix server.
It would be useful to allow specifying the range further - whether it's on both sides of now(), or whether only > or < of now() counts.
Usecase - checking various expiry times. Expiry time can be collected as a Unix timestamp and compared using fuzzytime(), but ideally it would be limited to the time range before now(). After now() the monitored entity would be expired, not soon to expire.