Reziversary 

Main Entry: rez·i·ver·sa·ry
Pronunciation: rez-ə-ˈvərs-rē, -ˈvər-sə-\
Function: noun
Inflected Form(s):
plural rez-i·ver·sa·ries
Etymology: Metaverse Slang for recurring annually, from rezzing + anniversary.

1: the annual recurrence of a date marking the "rezzing" of an Avatar.

Valiant Westland just celebrated his 1st Reziversary in Second Life on March 3rd, 2009.

Reziversary by Valiant Westland March 4, 2009

Reuniversary 

The annual recurrence of a date marking a notable event of reuniting.

Every year we celebrate our reuniversary on the day we got back together after our short break-up.

Reuniversary by MelToddy March 30, 2010