  Eternalism is the view that the past, the present and the future exist
simpliciter. A typical argument in favor of this view leans on the relativity
of simultaneity. The 'equally real with' relation is assumed to be transitive
between spacelike separated events connected by hyperplanes of simultaneity.
This reasoning is in tension with the conventionality of simultaneity.
Conventionality indicates that, even within a specific frame, simultaneity is
based on the choice of the synchronization parameter. Hence the argument for
eternalism is compromised. This paper lays out alternative eternalist
strategies which do not hinge on hyperplanes. While we lack a rigorous proof
for eternalism, there are still cogent reasons to prefer eternalism over
presentism.
