Fix Excel CSV Date Import Errors with Locale-Aware Tools

CSV files don't store date formats, so Excel guesses based on your computer's locale, causing ambiguous dates like 03/04/2025 to be read as April 3 in the US or March 4 in the UK. The correct approach is to use Excel's Get Data from Text/CSV feature and set date columns to text, or use browser-based tools like FormatList to bulk-fix dates. For team data, adopt ISO 8601 (YYYY-MM-DD) to avoid ambiguity.