diff --git a/contrib/sslinfo/sslinfo--1.2--1.3.sql b/contrib/sslinfo/sslinfo--1.2--1.3.sql
index 9d64d2bfa4..424a11afe4 100644
--- a/contrib/sslinfo/sslinfo--1.2--1.3.sql
+++ b/contrib/sslinfo/sslinfo--1.2--1.3.sql
@@ -3,10 +3,10 @@
 -- complain if script is sourced in psql, rather than via CREATE EXTENSION
 \echo Use "CREATE EXTENSION sslinfo" to load this file. \quit
 
-CREATE FUNCTION ssl_client_get_notbefore() RETURNS timestamp
+CREATE FUNCTION ssl_client_get_notbefore() RETURNS timestamptz
 AS 'MODULE_PATHNAME', 'ssl_client_get_notbefore'
 LANGUAGE C STRICT PARALLEL RESTRICTED;
 
-CREATE FUNCTION ssl_client_get_notafter() RETURNS timestamp
+CREATE FUNCTION ssl_client_get_notafter() RETURNS timestamptz
 AS 'MODULE_PATHNAME', 'ssl_client_get_notafter'
 LANGUAGE C STRICT PARALLEL RESTRICTED;
diff --git a/src/test/ssl/t/001_ssltests.pl b/src/test/ssl/t/001_ssltests.pl
index 490c48a7bb..90a4230413 100644
--- a/src/test/ssl/t/001_ssltests.pl
+++ b/src/test/ssl/t/001_ssltests.pl
@@ -740,10 +740,10 @@ command_like(
 		"$common_connstr user=ssltestuser sslcert=ssl/client.crt "
 		  . sslkey('client.key'),
 		'-c',
-		"SELECT ssl,version,cipher,bits,client_dn,client_serial,issuer_dn,not_before::date,not_after::date FROM pg_stat_ssl WHERE pid = pg_backend_pid()"
+		"SELECT ssl,version,cipher,bits,client_dn,client_serial,issuer_dn,not_before AT TIME ZONE 'UTC' AS not_before,not_after AT TIME ZONE 'UTC' AS not_after FROM pg_stat_ssl WHERE pid = pg_backend_pid()"
 	],
 	qr{^ssl,version,cipher,bits,client_dn,client_serial,issuer_dn,not_before,not_after\r?\n
-				^t,TLSv[\d.]+,[\w-]+,\d+,/?CN=ssltestuser,$serialno,/?\QCN=Test CA for PostgreSQL SSL regression test client certs,2023-06-29,2050-01-01\E\r?$}mx,
+				^t,TLSv[\d.]+,[\w-]+,\d+,/?CN=ssltestuser,$serialno,/?\QCN=Test CA for PostgreSQL SSL regression test client certs,2023-06-29 01:01:01,2050-01-01 01:01:01\E\r?$}mx,
 	'pg_stat_ssl with client certificate');
 
 # client key with wrong permissions
diff --git a/src/test/ssl/t/003_sslinfo.pl b/src/test/ssl/t/003_sslinfo.pl
index 587c0e2dce..4df3a941b5 100644
--- a/src/test/ssl/t/003_sslinfo.pl
+++ b/src/test/ssl/t/003_sslinfo.pl
@@ -167,15 +167,15 @@ is($result, 't', "ssl_issuer_field() for commonName");
 
 $result = $node->safe_psql(
 	"certdb",
-	"SELECT ssl_client_get_notbefore()::date = not_before::date, "
-	  . "not_before::date = '2023-06-29' FROM pg_stat_ssl WHERE pid = pg_backend_pid();",
+	"SELECT ssl_client_get_notbefore() = not_before, "
+	  . "not_before AT TIME ZONE 'UTC' = '2023-06-29 01:01:01' FROM pg_stat_ssl WHERE pid = pg_backend_pid();",
 	connstr => $common_connstr);
 is($result, 't|t', "ssl_client_get_notbefore() for not_before timestamp");
 
 $result = $node->safe_psql(
 	"certdb",
-	"SELECT ssl_client_get_notafter()::date = not_after::date, "
-	  . "not_after::date = '2050-01-01' FROM pg_stat_ssl WHERE pid = pg_backend_pid();",
+	"SELECT ssl_client_get_notafter() = not_after, "
+	  . "not_after AT TIME ZONE 'UTC' = '2050-01-01 01:01:01' FROM pg_stat_ssl WHERE pid = pg_backend_pid();",
 	connstr => $common_connstr);
 is($result, 't|t', "ssl_client_get_notafter() for not_after timestamp");