  Real-Time Time-Dependent Density Functional Theory (TDDFT) has become an
attractive tool to model quantum dynamics on a first-principles Density
Functional Theory level. In recent years, several developments and applications
in this field were achieved and hopefully lead to new insights. We present here
our versatile and efficient Real-Time TDDFT implementation into the
all-electron numerical basis-set DFT code package FHI-aims. This article is
meant as a short overview on how we performed this task and what can be done
with our implementation. We further shed light on the connection of the basis
set size to the accuracy of absorption spectrum simulation results.
