{
  "name": "Century years 1600–2800 and the Julian gap",
  "desc": "Leap status of each century year from 1600 to 2800 under the Gregorian and Julian rules, and how many days a Julian date trails the Gregorian date for the same day, counted from Julian March 1 of that year.",
  "lic": "CC BY 4.0",
  "lic_url": "https://creativecommons.org/licenses/by/4.0/",
  "by": "The Yardstick Almanac",
  "url": "https://theyardstickalmanac.com/calendars/gregorian-leap-year-rule/",
  "from": [
    "Gregorian and Julian leap-year rules, Explanatory Supplement to the Astronomical Almanac, ch. 15, sec. 15.4.2 and 15.3.5"
  ],
  "how": "Compiled by The Yardstick Almanac from the data listed",
  "data_by": [
    "Computed from the Gregorian and Julian leap-year rules (Explanatory Supplement to the Astronomical Almanac, ch. 15, sec. 15.4.2 and 15.3.5), 2026-11-01, CC BY 4.0"
  ]
}