Nagios ignoring timeperiod for one server

Nagios
1

We have a virtual server we are trying to monitor whose host reboots every night. The host’s checks are fine, but the virtual server flat ignores the timeperiod I set for it.
This is my timeperiod configuration:

define timeperiod{
     timeperiod_name  foo
     alias                     Foo
     sunday                  03:30-24:00
     monday                 03:30-24:00
     tuesday                 03:30-24:00
     wednesday            03:30-24:00
     thursday               03:30-24:00
     friday                   03:30-24:00
     saturday               03:30-24:00
     }

And my host configuration:

define host{
     use                       windows-server
     host_name            foo
     alias                     Foo
     address                 XXX.XXX.XXX.XXX
     check_period         foo
     notification_period foo
     hostgroups             windows-servers
     parents                  bar
     }

This exact setup works for every other server in our network. However, this morning we got a critical notification that foo went down at 2:50 am. Why is it ignoring its timeperiod?

2

This is still not working properly, and we get several false reports that this server is going down. Does anyone know what may be going on?