Does anyone know why a NS account would have 2 seemingly active, valid fiscal years? Which one is the correct one?

{'links': [],
  'alllocked': 'F',
  'allownonglchanges': 'F',
  'aplocked': 'F',
  'arlocked': 'F',
  'closed': 'F',
  'enddate': '12/31/2023',
  'id': '30',
  'isadjust': 'F',
  'isinactive': 'F',
  'isposting': 'F',
  'isquarter': 'F',
  'isyear': 'T',
  'lastmodifieddate': '8/31/2023',
  'periodname': 'FY 2023',
  'startdate': '1/1/2023'},
 {'links': [],
  'alllocked': 'T',
  'allownonglchanges': 'F',
  'aplocked': 'T',
  'arlocked': 'T',
  'closed': 'T',
  'closedondate': '8/23/2023',
  'enddate': '1/31/2023',
  'id': '50',
  'isadjust': 'F',
  'isinactive': 'F',
  'isposting': 'F',
  'isquarter': 'F',
  'isyear': 'T',
  'lastmodifieddate': '8/31/2023',
  'periodname': 'FY 2023',
  'startdate': '2/1/2022'
}

One year is 1/Feb/2022-31/Jan/2023 and is closed. Probably should be renamed to FY 2022 One year is 1/Jan/2023-31/Dec/2023 and is open. There is an overlap between both for January 2023

To expand on this a bit, there's a feature called multi-calendar that allows you to assign different year-ending calendars to each subsidiary if necessary. So if your US sub has a 12/31 year-end, but your UK sub has a 3/31 year-end, they can each be assigned their own calendar that has the proper year-end.