diff --git a/library/x509.c b/library/x509.c
index ba80037..2e58462 100644
--- a/library/x509.c
+++ b/library/x509.c
@@ -1011,17 +1011,11 @@
 }
 
 #if defined(MBEDTLS_HAVE_TIME_DATE)
-/*
- * Set the time structure to the current time.
- * Return 0 on success, non-zero on failure.
- */
-static int x509_get_current_time(mbedtls_x509_time *now)
+int mbedtls_x509_time_gmtime(mbedtls_time_t tt, mbedtls_x509_time *now)
 {
     struct tm *lt, tm_buf;
-    mbedtls_time_t tt;
     int ret = 0;
 
-    tt = mbedtls_time(NULL);
     lt = mbedtls_platform_gmtime_r(&tt, &tm_buf);
 
     if (lt == NULL) {
@@ -1038,6 +1032,11 @@
     return ret;
 }
 
+static int x509_get_current_time(mbedtls_x509_time *now)
+{
+    return mbedtls_x509_time_gmtime(mbedtls_time(NULL), now);
+}
+
 int mbedtls_x509_time_is_past(const mbedtls_x509_time *to)
 {
     mbedtls_x509_time now;