  We propose a setup for the experimental realization of unexpected and
anisotropic $0$-$\pi$ transitions of the Josephson current, in a junction whose
link is made of irradiated Weyl semi-metal (WSM), due to the presence of chiral
nodes. We show using a Green's function technique that the Josephson current
through a time-reversal symmetric WSM has anisotropic periodic oscillations as
a function of $k_0L$, where $k_0$ is the (relevant) separation of the chiral
nodes and $L$ is the length of the sample. This is unexpected, for
time-reversal symmetric systems, although it has been shown earlier for
time-reversal symmetry breaking WSMs. We then show that the effective value of
$k_0$ can be tuned with precision by irradiating the sample with photons
resulting in $0$-$\pi$ transitions of the critical current. Finally, we discuss
the robustness of our setup.
