  Eternalism is the view that all times are equally real. The relativity of
simultaneity in special relativity backs this up. There is no cosmically
extended, self-existing 'now'. This leads to a tricky problem. What makes
statements about the present true? I shall approach the problem along the lines
of perspectival realism and argue that the choice of the perspective does. To
corroborate this point, the Lorentz transformations of special relativity are
compared to the structurally similar equations of the Doppler effect. The 'now'
is perspectivally real in the same way as a particular electromagnetic spectrum
frequency. I also argue that the ontology of time licensed by perspectival
realism is more credible in this context than its current alternative, the
fragmentalist interpretation of special relativity.
