metadata:
  version: "1.0.0"
  last_updated: "2026-02-01"
  source_urls: []

category: dates
subcategory: boundaries
tier: T2

bugs_caught:
  - "Epoch handling"
  - "Y2K38 overflow"
  - "Leap year calculations"

values:
  epoch:
    value: "1970-01-01T00:00:00Z"
    timestamp: 0
    bugs_caught:
      - "Epoch/zero date handling"
      - "Default date confusion"
    safe_for_automation: true

  before_epoch:
    value: "1969-12-31T23:59:59Z"
    timestamp: -1
    bugs_caught:
      - "Negative timestamp handling"
      - "Pre-epoch dates"
    safe_for_automation: true

  y2k:
    value: "2000-01-01T00:00:00Z"
    bugs_caught:
      - "Y2K date handling"
    safe_for_automation: true

  y2k38:
    value: "2038-01-19T03:14:07Z"
    timestamp: 2147483647
    bugs_caught:
      - "Y2K38 32-bit overflow"
      - "Unix timestamp max"
    safe_for_automation: true

  y2k38_plus_1:
    value: "2038-01-19T03:14:08Z"
    timestamp: 2147483648
    bugs_caught:
      - "Y2K38 overflow"
      - "32-bit signed integer overflow"
    safe_for_automation: true

  leap_year_feb_29:
    value: "2024-02-29"
    bugs_caught:
      - "Leap year February 29"
    safe_for_automation: true

  non_leap_year_feb_28:
    value: "2023-02-28"
    bugs_caught:
      - "Non-leap year February end"
    safe_for_automation: true

  century_non_leap:
    value: "1900-02-28"
    bugs_caught:
      - "Century year not divisible by 400"
      - "1900 was not a leap year"
    safe_for_automation: true

  century_leap:
    value: "2000-02-29"
    bugs_caught:
      - "Century year divisible by 400"
      - "2000 was a leap year"
    safe_for_automation: true

  month_31_days:
    value: "2024-01-31"
    bugs_caught:
      - "31-day month end"
    safe_for_automation: true

  month_30_days:
    value: "2024-04-30"
    bugs_caught:
      - "30-day month end"
    safe_for_automation: true

  year_end:
    value: "2024-12-31T23:59:59Z"
    bugs_caught:
      - "Year end handling"
      - "New Year rollover"
    safe_for_automation: true

  year_start:
    value: "2024-01-01T00:00:00Z"
    bugs_caught:
      - "Year start handling"
    safe_for_automation: true

  far_future:
    value: "9999-12-31T23:59:59Z"
    bugs_caught:
      - "Far future date handling"
    safe_for_automation: true

  far_past:
    value: "0001-01-01T00:00:00Z"
    bugs_caught:
      - "Far past date handling"
      - "Year 1 AD"
    safe_for_automation: true

  midnight:
    value: "2024-06-15T00:00:00Z"
    bugs_caught:
      - "Midnight handling"
      - "Day boundary"
    safe_for_automation: true

  end_of_day:
    value: "2024-06-15T23:59:59Z"
    bugs_caught:
      - "End of day"
      - "23:59:59 vs 24:00:00"
    safe_for_automation: true

  noon:
    value: "2024-06-15T12:00:00Z"
    bugs_caught:
      - "Noon/12 PM handling"
      - "AM/PM boundary"
    safe_for_automation: true