diff --git a/global-functions b/global-functions
index 0e1530c..73a6d37 100644
--- a/global-functions
+++ b/global-functions
@@ -36,6 +36,7 @@
 :global ScriptInstallUpdate;
 :global MailServerIsUp;
 :global TimeIsSync;
+:global WaitTimeSync;
 
 # url encoding
 :set UrlEncode do={
@@ -474,3 +475,12 @@
 
   :return false;
 }
+
+# wait for time to become synced
+:set WaitTimeSync do={
+  :global TimeIsSync;
+
+  :while ([ $TimeIsSync ] = false) do={
+    :delay 1s;
+  }
+}