Nginx shows 404 all the time

2014/03/18 03:00:43 [error] 834#0: *3 FastCGI sent in stderr: "PHP message: PHP Warning:  phpinfo():
It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function.
In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier.
We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /usr/share/nginx/html/info.php on line 2"
while reading response header from upstream, client: 123.456.789.123, server:, request: "GET /info.php HTTP/1.1",
upstream: "fastcgi://unix:/var/run/php5-fpm.sock:", host: ""

Nginx shows 404 all the time. I got the above error from Nginx error log. Below is my Nginx config file.

server {
        listen; ## listen to Varnish

        root /www/;
        index index.php index.html index.htm;

        # Make site accessible from http://localhost/

        location / {
                # First attempt to serve request as file, then
                # as directory, then fall back to displaying a 404.
                try_files $uri $uri/ /index.php?q=$uri&$args;
                # Uncomment to enable naxsi on this location
                # include /etc/nginx/naxsi.rules

        # Only for nginx-naxsi used with nginx-naxsi-ui : process denied reques$
        #location /RequestDenied {
        #       proxy_pass;

        error_page 404 /404.html;
# redirect server error pages to the static page /50x.html
        error_page 500 502 503 504 /50x.html;
        location = /50x.html {
                root /usr/share/nginx/html;

        # pass the PHP scripts to FastCGI server listening on
        location ~ \.php$ {
                try_files $uri =404;
                fastcgi_split_path_info ^(.+\.php)(/.+)$;
        #       # NOTE: You should have "cgi.fix_pathinfo = 0;" in php.ini
        #       # With php5-cgi alone:
        #       fastcgi_pass;
        #       # With php5-fpm:
                fastcgi_pass unix:/var/run/php5-fpm.sock;
                fastcgi_index index.php;
                fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_nam$
                include fastcgi_params;

        # deny access to .htaccess files, if Apache's document root
        # concurs with nginx's one
        location ~ /\.ht {
                deny all;

Any tips for resolving it?