Progressions in B — Sitar
Every Western chord the key of B owns, charted on CGCGC — a reference layer, not this instrument's own harmony.
B major harmonises to B – C#m – D#m – E – F# – G#m – A#°; B minor to Bm – C#° – D – Em – F#m – G – A. Each chord links to its Sitar voicings — a Western harmony reference laid over an instrument whose own music has no chord progressions at all.
Set B as Sa and the thaats engine answers a different question: not which chords harmonise it, but which of the ten classification frames could hold a raga built on it. That is the honest sitar question; this page answers the Western one instead.