Retirement tax questions

Thank you.  
That makes sense as I turned 59 1/2 in June, 2024 and when I put the date of my Roth conversion on Nov 2024; it subtracted the state taxes that were withheld.  

I tested it by inputting May and then, June.  The software switched it back and forth. 

So my follow-up question becomes

Is this only with pensions? Is my Traditional IRA considered a pension?

 I converted from a traditional IRA into a Roth.  I am confused as to the category defined as a pension.