With IPHost Network Monitor you can run simple snmp requests against a HP device in your network.
evthTimeSinceOccurrence
evth Time Since Occurrence
1.3.6.1.4.1.11.2.14.1.7.3.7
This object specifies the number of centiseconds since this event was last triggered.
Back to hp-icf MIB page.
IPHost Network monitor allows you to monitor evthTimeSinceOccurrence on Hewlett Packard device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.