Trying to convert pwdLastSet to Day Month Year Time format

I'm trying to take session.ad.last.attr.pwdLastSet and convert it to a more user-friendly readable format. I'm very weak on both Active Directory as well as Tcl.

Here's what I have so far:

    if { [ACCESS::policy agent_id] eq "pwdLastSetCheck" } {  
        log local0. "Entered pwdLastSetCheck"  
        set pwdLastSet_epoch [ACCESS::session data get session.ad.last.attr.pwdLastSet]  
        log local0. "epoch time $pwdLastSet_epoch"  
        set clockFormat "[clock format $pwdLastSet_epoch]"  
        log local0. "formatted $clockFormat"  
          }

However my output looks like:

Apr  3 13:36:30 dmdc-f5-lab01 info tmm1[15679]: Rule /Common/cp_GenerateReset : Event Fired
Apr  3 13:36:30 dmdc-f5-lab01 info tmm1[15679]: Rule /Common/cp_GenerateReset : Entered pwdLastSetCheck
Apr  3 13:36:30 dmdc-f5-lab01 info tmm1[15679]: Rule /Common/cp_GenerateReset : epoch time 130722168433333201
Apr  3 13:36:30 dmdc-f5-lab01 info tmm1[15679]: Rule /Common/cp_GenerateReset : formatted Thu Jul 11 18:40:01 CDT -152544714

Any idea why my "year" looks like that? Or a better recommendation on how I should code this?

thanks in advance, Geoff