Getting the time of hire from the current year beginning

Hi,

I want to get the duration of between the current year start i.e Jan 1st to the hire date in that year.

Ex: if an employee hired on 15th june 2005, then i should get the number of days from the year start to this date i.e around 5 months+ 15 days.

I tried looking at HRS operation, but i could not get clue from it.

Can anyone give ideas of how to achieve.

thanks,

ravi