'Flutter/Dart: Excel Date to Date Object

I am parsing an excel document in excel using the excel: ^1.1.5 package. In my sheet, i have a Date column and this Date is being received in my Flutter code in the following format

"44663"

rather than:

"2022/04/12"

How do I parse this to a format such as YY-MM-DD.

I have tried DateTime.parse(), but it throws an error that my date format is invalid.



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