diff --git a/rfc8416.php b/rfc8416.php
index 1e92fe1..e22d597 100755
--- a/rfc8416.php
+++ b/rfc8416.php
@@ -7,11 +7,11 @@ require ("lib/functions.php");
 
 // Define array() we are going to populate with data.
 $roas["slurmVersion"] = 1;
-$roas["_comments"]["modified"]["commit"] = shell_exec ("/usr/bin/git -C ../registry/ log -n 1  --merges --pretty='format:%H'");
-$roas["_comments"]["modified"]["merge"] = shell_exec ("/usr/bin/git -C ../registry/ log -n 1  --merges --pretty='format:%p'");
-$roas["_comments"]["modified"]["author"] = shell_exec ("/usr/bin/git -C ../registry/ log -n 1  --merges --pretty='format:%an <%ae>'");
-$roas["_comments"]["modified"]["date"] = shell_exec ("/usr/bin/git -C ../registry/ log -n 1  --merges --pretty='format:%aD'");
-$roas["_comments"]["modified"]["subject"] = shell_exec ("/usr/bin/git -C ../registry/ log -n 1  --merges --pretty='format:%s'");
+$roas["_comments"]["modified"]["commit"] = shell_exec ("/usr/bin/git -C ../registry/ log -n 1 --date=iso8601 --merges --pretty='format:%H'");
+$roas["_comments"]["modified"]["merge"] = shell_exec ("/usr/bin/git -C ../registry/ log -n 1 --date=iso8601 --merges --pretty='format:%p'");
+$roas["_comments"]["modified"]["author"] = shell_exec ("/usr/bin/git -C ../registry/ log -n 1 --date=iso8601 --merges --pretty='format:%an <%ae>'");
+$roas["_comments"]["modified"]["date"] = shell_exec ("/usr/bin/git -C ../registry/ log -n 1 --date=iso8601 --merges --pretty='format:%aD'");
+$roas["_comments"]["modified"]["subject"] = shell_exec ("/usr/bin/git -C ../registry/ log -n 1 --date=iso8601 --merges --pretty='format:%s'");
 $roas["_comments"]["modified"]["url"] = "https://git.dn42.us/dn42/registry/commit/";
 $roas["_comments"]["modified"]["url"] .= $roas["_comments"]["modified"]["commit"];
 $roas["validationOutputFilters"]["prefixFilters"] = array();