<?php
date_default_timezone_set('UTC');
$timestamp = mktime(0,0,0,11,1,2014);
var_dump('4 thursdays', $timestamp);
var_dump('first thursday + 3 weeks', $timestamp);
date_default_timezone_set('America/Chicago');
$timestamp = mktime(0,0,0,11,1,2014);
var_dump('4 thursdays', $timestamp);
var_dump('first thursday + 3 weeks', $timestamp);
preferences:
27.43 ms | 402 KiB | 5 Q