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

category: dates
subcategory: timezone
tier: T2

bugs_caught:
  - "Daylight saving time transitions"
  - "UTC offset handling"
  - "Timezone conversion errors"

values:
  utc:
    value: "2024-06-15T12:00:00Z"
    bugs_caught:
      - "UTC handling"
      - "Z suffix parsing"
    safe_for_automation: true

  positive_offset:
    value: "2024-06-15T12:00:00+05:30"
    bugs_caught:
      - "Positive UTC offset"
      - "India Standard Time"
    safe_for_automation: true

  negative_offset:
    value: "2024-06-15T12:00:00-08:00"
    bugs_caught:
      - "Negative UTC offset"
      - "Pacific Time"
    safe_for_automation: true

  max_positive_offset:
    value: "2024-06-15T12:00:00+14:00"
    bugs_caught:
      - "Maximum positive offset"
      - "Line Islands"
    safe_for_automation: true

  max_negative_offset:
    value: "2024-06-15T12:00:00-12:00"
    bugs_caught:
      - "Maximum negative offset"
      - "Baker Island"
    safe_for_automation: true

  half_hour_offset:
    value: "2024-06-15T12:00:00+05:30"
    bugs_caught:
      - "Half-hour timezone"
      - "India, Nepal, etc."
    safe_for_automation: true

  quarter_hour_offset:
    value: "2024-06-15T12:00:00+05:45"
    bugs_caught:
      - "Quarter-hour timezone"
      - "Nepal"
    safe_for_automation: true

  dst_spring_forward_us:
    value: "2024-03-10T02:30:00"
    timezone: "America/New_York"
    bugs_caught:
      - "DST spring forward"
      - "Non-existent time"
    safe_for_automation: true
    note: "2:30 AM doesn't exist on this day in US"

  dst_fall_back_us:
    value: "2024-11-03T01:30:00"
    timezone: "America/New_York"
    bugs_caught:
      - "DST fall back"
      - "Ambiguous time"
    safe_for_automation: true
    note: "1:30 AM occurs twice on this day in US"

  dst_spring_forward_eu:
    value: "2024-03-31T02:30:00"
    timezone: "Europe/London"
    bugs_caught:
      - "EU DST spring forward"
    safe_for_automation: true

  dst_fall_back_eu:
    value: "2024-10-27T01:30:00"
    timezone: "Europe/London"
    bugs_caught:
      - "EU DST fall back"
    safe_for_automation: true

  no_dst_timezone:
    value: "2024-06-15T12:00:00"
    timezone: "UTC"
    bugs_caught:
      - "No-DST timezone handling"
    safe_for_automation: true

  date_line_crossing:
    value: "2024-06-15T23:00:00+12:00"
    bugs_caught:
      - "International Date Line"
      - "Same instant, different dates"
    safe_for_automation: true
    note: "Same instant is 2024-06-16 in -12:00"

  historical_tz_change:
    value: "2011-12-29T23:59:59"
    timezone: "Pacific/Apia"
    bugs_caught:
      - "Historical timezone change"
      - "Samoa skipped Dec 30, 2011"
    safe_for_automation: true