TidyFactPractical calculators, checked factsFact-check log
The fact-check record for our 2 tools: the official sources each tool was checked against, the check date and the checker. An AI does the check. No person reviewed these pages.
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After we make a tool, an AI that did not help make it checks the tool against the official sources. The method is on Sources and how we check. The data below is the same as the “Sources” list on each tool page. To report a mistake, see corrections and contact.
Bank holidays and business days by RBI office
- Checked on
- Checked by
- A separate, independent AI agent (Claude, by Anthropic)No person reviewed it.
- Official sources checked
- Holidays: Regional Office = Select All, Year = 2026, each month January to December (holiday matrix under the Negotiable Instruments Act and Banks' Closing of Accounts)
- Press release, 28 August 2015: banks to observe second and fourth Saturdays as public holidays (Government of India notification of 20 August 2015, effective 1 September 2015)
- Master Circular on Customer Service in Banks, RBI/2015-16/59, 1 July 2015 (para 7.2 weekly holiday; para 29 public holidays under Section 25 of the Negotiable Instruments Act, which include Sunday)
Bigha and katha converter by state
- Checked on
- Checked by
- A separate, independent AI agent (Claude, by Anthropic)No person reviewed it.
- Official sources checked
- Metadata and Data Standards, Annexure IV, CD00.01 Measurement conversion table (Table 1.3 Conversion Factors: Rajasthan jarib bigha, Haryana karam units, Jharkhand katha; owner: Department of Land Records, source dolr.nic.in)
- Certificate on PIM Training Course, Module 5, Topic 5.4: Units in Irrigation Management and conversion factors (1 Bigha (Pucca) = 20 biswa = 27225 sq ft)
- National Green Tribunal, Original Application No. 63/2021, Surendra Singh Shekhawat vs State of Rajasthan (1 bigha = 20 biswa = 400 biswansi)
- Services offered: Measurements of land (1 Acre = 4 Bigha 16 Biswa = 4840 sq yd)
- Gap Analysis, National Generic Document Registration System (NGDRS): land measurement units by state (West Bengal: bigha, katha, chatak, decimal)
- Statistical Handbook, Assam 2025: conversion table (1 Acre = 3.025 Bighas)
- Resettlement Action Plan, Brahmaputra Bridge Project (B-Beega, K-Katha, L-Lessa; source: Revenue Department, Kamrup)
- Revenue Records and Arrangement of Holdings (training slides: bigha, biswa, nali, acre, hectare)