timestamp adds a day

[Anon]

I have a MySQL database access via PHP4, and when it adds a record to a table with a timestamp(14) field, it adds it a day in the future. So, a date will end up with the right year, month, hour, min and sec, but will be one day ahead.
Even when editing the date manually to change it back a day, it will put it in a day ahead. I can edit manually and put it back 2 days, and it arrives at the right date.
Anyone else seen this or know of a cure? Using very recent versions of MySQL and PHP.

[[deleted]]

a "timestamp" gets update automatically, and takes the date and time of the system that the database runs on.

Did you make sure that your computer's date is correct?

[Anon]

Yes, the date is right.