Images like those from "Gambar Silvy" or "Syair Putra Bali" are not just decorative. They contain hidden symbols, animals, or mythical figures (like the Kalong or giant bat) that practitioners interpret to find "lucky" numbers.
You mentioned dates like January 13, 2019 , and June 29, 2020 . In this culture, past winning patterns are meticulously archived in "detailed papers" to help identify recurring "Gaib" (mystical) or mathematical trends. Why "35 Images"?
Using "Tanggal Gaib" (mystical dates) reflects a belief in spiritual timing.