How to edit timeformat on SSI boardNews?

[FXSubs]

Hello

Im creating a custom home and here im using ssi_boardNews to get all the recent posts on the main mage

Here i made a design (html+css) to show the date like this

Day
Month

IE:

05
APR

I want to know if theres some way to edit this timeformat to just get this 2 parts, the day number and the first 3 letters of the month


Thanks in advance for all the help, if this cant be done, i clear understand it.