Aboge Reckoning (Alip Rebo Wage) (阿伯格曆算)

THE ABOGE RECKONING — the Javanese-Islamic calendar as the Islam Aboge communities of Banyumas, Purbalingga and Cilacap STILL keep it: by the kurup that officially ended in 1936. Where the palace moved to Asapon, Aboge kept the old arithmetic, so their whole calendar runs exactly ONE DAY LATER — their first fast and their Idul Fitri famously trail the government's every year, reported in the Indonesian press every Ramadan. THE ROUND'S THEOREM: the tradition's entire MNEMONIC CORPUS — eight year-formulas (Aboge, Ehehadpon, Jimahpon, Jesaing, Daltugi, Bemisgi, Wunenwon, Jimage) and twelve month-formulas (Ramjiji through Sarpatji) — is not lore to be recited but ARITHMETIC TO BE PROVEN: every cell falls out of the windu's year-lengths and the months' 30/29 alternation, mod 7 and mod 5, from the single seed 'Alip opens Rebo Wage.' All twenty formulas asserted at load; the year layer proven absolutely for all 120 years against the weton engine. PUBLISHED ANCHORS: Idul Fitri Aboge = Selasa Pon 1 April 2025 and Sabtu Pahing 21 March 2026 (Banyumas press), both reproduced to the day, weekday AND pasaran. A tradition-report on a living calendar — never a ruling on when anyone should fast. Pure compute, no LLM.

Cost: 1 TIAN Points per call. tRPC procedure aboge.day.