diff --git a/packages/block-library/src/post-date/index.php b/packages/block-library/src/post-date/index.php
index e185a995f6fc2..3e79855aa25b7 100644
--- a/packages/block-library/src/post-date/index.php
+++ b/packages/block-library/src/post-date/index.php
@@ -23,8 +23,14 @@ function render_block_core_post_date( $attributes, $content, $block ) {
 	$post_ID = $block->context['postId'];
 
 	if ( isset( $attributes['format'] ) && 'human-diff' === $attributes['format'] ) {
-		// translators: %s: human-readable time difference.
-		$formatted_date = sprintf( __( '%s ago', 'gutenberg' ), human_time_diff( get_post_timestamp( $post_ID ) ) );
+		$post_timestamp = get_post_timestamp( $post_ID );
+		if ( $post_timestamp > time() ) {
+			// translators: %s: human-readable time difference.
+			$formatted_date = sprintf( __( '%s from now', 'gutenberg' ), human_time_diff( $post_timestamp ) );
+		} else {
+			// translators: %s: human-readable time difference.
+			$formatted_date = sprintf( __( '%s ago', 'gutenberg' ), human_time_diff( $post_timestamp ) );
+		}
 	} else {
 		$formatted_date = get_the_date( empty( $attributes['format'] ) ? '' : $attributes['format'], $post_ID );
 	}