Top panel: Inclination of the heliospheric current sheet computed in the potential-field source-surface approximation at Wilcox Solar Observatory during the progression of solar cycle 25, reported as a function of Carrington rotation number. Bottom panel: Solar cycle sunspot number progression for solar cycle 25 as a function of time (years) (source: NOAA/Space Weather Prediction Center website). The two different phases at which observations on February 22, 2021, and October 12, 2022, were carried out are highlighted by arrows in both panels.