C program Postgres 6.3 and date

Hello,
first thing of note is that I'm not on the list so please email
solutions to me.
I recently upgraded postgres from version ~6 to 6.3. Unfortunately,
where before I had everything passed back as text strings now things are

being passed back in their binary form.

My question is
How is the postgres date type stored in C?
Is it an integer in seconds from a specific date?
How would I convert it to a text string of the form 05-21-1998?
(When I print it as an integer I get 841823536)
Before I received that text string as a result of the PQgetvalue now
I am getting the binary form and I can't find a reference on how to
convert
back.

Thanks
Roberto Taglioretti

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