I changed the timezone in my php.ini file, I set it as "Asia/Manila". Client and agent side timezone is correct but it is one day late in the CSV file. Here's the attachments.
Client side
Agent side
CSV file (ticket exported)
You already have a thread open for this issue under Mods and Customizations. Please continue in that thread and try making the time zone settings in the places indicated by @[deleted] and report back the results there. Closing this thread.