{"id":18923846,"date":"2026-05-30T12:03:07","date_gmt":"2026-05-30T12:03:07","guid":{"rendered":"https:\/\/wordpress.org\/support\/topic\/invalid-timezone\/"},"modified":"2026-05-30T12:03:07","modified_gmt":"2026-05-30T12:03:07","slug":"invalid-timezone","status":"publish","type":"topic","link":"https:\/\/wordpress.org\/support\/topic\/invalid-timezone\/","title":{"rendered":"Invalid timezone"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">My site health was reporting a critical error with an invalid timezone:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">PHP default timezone was changed after WordPress loading by a <code>date_default_timezone_set()<\/code> function call. This interferes with correct calculations of dates and times.<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">The cause was traced back to the Countdown Timer plugin. Commenting out lines 147\u2013150 of <code>fergcorp_countdownTimer.php<\/code> fixed the issue:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\t\t$tz = get_option('timezone_string');<br \/>\t\tif ( $tz ){ \/\/Get and check if we have a valid time zone...<br \/>\t\t\tdate_default_timezone_set($tz); \/\/...if so, use it<br \/>\t\t}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">This was in a PHP 8.3 environment.<\/p>\n","protected":false},"template":"","class_list":["post-18923846","topic","type-topic","status-publish","hentry","topic-tag-timezone"],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/topic\/18923846","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/topic"}],"about":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/topic\/18923846\/revisions"}],"wp:attachment":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/media?parent=18923846"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}