  The Cabibbo-Kobayashi-Maskawa matrix in the Standard Model is currently the
only experimentally-confirmed source of CP-violation. The intrinsic electric
dipole moment of the nucleon induced by this CP-phase via hadronic loop and
pole diagrams has been studied more than two decades ago, but the existing
calculation is subject to various theoretical issues such as the breakdown of
chiral power counting and uncertainties in the determination of low energy
constants. We carry out an up-to-date re-analysis on both one-loop and pole
diagram contributions to the nucleon electric dipole moment based on Heavy
Baryon Chiral Perturbation Theory in a way that preserves power counting, and
redo the determination of the low energy constants following the results of
more recent articles. Combined with an estimation of higher-order
contributions, we expect the long-distance contribution to the Standard Model
nucleon electric dipole moment to be approximately
$(1\times10^{-32}-6\times10^{-32})e\,\mathrm{cm}$.
