As you've probably guessed, this is a time zone issue. There's probably a difference between your time zone and the server time zone.

How are you creating this Custom Print? If BI Publisher, then take a look at the "uuu_p" parameters at the top of the Sample XML data. Parameters like uuu_p_timeZoneF, uuu_p_diffMinutesF and uuu_p_sysyTimeZoneID are populated at runtime and can help you format the times. Put them into your Custom Print and run it to see the values.

Once you've figured that out, take a look at this blog post to see how to format dates with timezones in BIP using the format-date function: https://blogs.oracle.com/xmlpublisher/entry/how_to_keep_your_dates_from_go

Hope that helps!