  Canonical quantization applied to closed systems leads to static equations,
the Wheeler-deWitt equation in Quantum Gravity and the time independent
Schr\"odinger equation in Quantum Mechanics. How to restore time is the Problem
of Time(s). Integrating developments are: a) entanglement of a microscopic
system with its classical environment accords it a time evolution description,
the time dependent Schr\"odinger equation, where t is the laboratory time
measured by clocks; b) canonical quantization of Special Relativity yields both
the Dirac Hamiltonian and a self adjoint "time" operator, restoring to position
and time the equivalent footing accorded to energy and momentum in Relativistic
Quantum Mechanics. It introduces an intrinsic time property {\tau} associated
with the mass of the system, and a basis additional to the usual configuration,
momentum and energy basis. As a generator of momentum displacements and
consequently of energy, it invalidates Pauli's objection to the existence of a
time operator. It furthermore complies with the requirements to condition the
other observables in the conditional interpretation of QG. As Pauli's objection
figures explicit or implicitly in most current developments of QM and QG, its
invalidation opens to research the effect of this new two times perspective on
such developments.
