Yes they did.
Only March to December were identical.
2004 is a leap year, and 2021 is not. 2004 and 2021 are the same only from the 1st of March through the 31st of December.
Yes they did. 2004 was a leap year, but 2010 was not, so the year started on different days, but from the 1st of March onwards, the two years had the same day and date pattern.
Hush - 2004 was released on: USA: March 2004
Unreal Tournament 2004 - 2004 VG was released on: USA: 16 March 2004 UK: 19 March 2004
The Stones - 2004 was released on: USA: 17 March 2004
The Help - 2004 was released on: USA: 5 March 2004
The Visits - 2004 was released on: USA: 26 March 2004
This Just In - 2004 was released on: USA: 14 March 2004
The Florist - 2004 was released on: USA: 12 March 2004
The 2004 calendar will repeat itself in 2032.
The Drop - 2004 1-10 was released on: USA: 10 March 2004 USA: 10 March 2004