  This study analyzes 338 new times of visual, CCD, photoelectric and
photographic maxima of the classical Cepheid SV Vul. The corresponding
observations were made between 1913 and 2022. On this new and large
observational basis, the period variations of this star of major astrophysical
interest are re-visited. Without contradicting the theory or previous studies,
we show that visual observations are important for a long-term monitoring of
the period variations of well-selected bright Cepheids. This study establishes
the period rate of change of SV Vul at -250 s/yr. Its period is currently
shorter than 45 days.
