A day fixed by the 210-day calendar
The Balinese pawukon calendar runs in cycles of 210 days, with thirty named seven-day weeks. Tumpek Landep falls on Saniscara (Saturday) Kliwon in the week called Landep, the fourteenth day of each cycle. A 2025 study describes it as a day of devotion to Sang Hyang Pasupati, Shiva as Pasupati, and cites a 2003 Indonesian handbook of Hindu ceremonies: the day was first set for iron things such as weapons, farm tools and heirlooms. A Balinese palm-leaf text, the Sundarigama, sets out when and how the holy days of this calendar are kept, but we have not yet read a passage in it, or in any older text, that names Tumpek Landep.
To verify: A passage in the Sundarigama, or another palm-leaf text, that names Tumpek Landep, and when that text was written; A dated description of the day older than 2003, for example in English books on Balinese ritual such as F. B. Eiseman, Bali: Sekala and Niskala (1990), which the 2025 study lists