Here is:
@Juniper_srx345> show chassis alarms
1 alarms currently active
Alarm time Class Description
2018-07-29 21:07:58 EDT Major Host 0 fxp0 : Ethernet Link Down
@Juniper_srx345> show system alarms
1 alarms currently active
Alarm time Class Description
2018-07-29 21:07:58 EDT Major Host 0 fxp0 : Ethernet Link Down
As I noted this occurred at one time on one day only. Actually the install was several days ago but the reboot try was yesterday. I assume it picked up that date.
Mark