Solaris 8 date of install

Hello, Is there a way I can find out what date Solaris 8 was installed on the server? Is there a command to find out this information?Thanks in adavance.
[189 byte] By [Jose] at [2007-11-25 22:51:48]
# 1
Check this out:last | grep wtmpW
Ferguson at 2007-7-5 17:07:16 > top of Java-index,Solaris Operating System,Solaris Essentials - General Technical Questions...
# 2
See the logs in /var/sadm/system/logs
tkevans at 2007-7-5 17:07:16 > top of Java-index,Solaris Operating System,Solaris Essentials - General Technical Questions...