A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
The format may be correct looking, but it is possible that the value is still text. Formatting that is applies after entry is ignored for some text values.
To check, format both I2 and T2 as a number - if their appearance changes (today's date will show as 44069 - then the date is correctly entered - if it does not change to a whole number, then re-format the two cells as date and re-enter both dates by selecting the cell, pressing F2, and hitting Enter or simply overwriting the cell with the date.