From 5491d4c34554afa7631aacae63f7e5b691f2821e Mon Sep 17 00:00:00 2001
From: Adrien Kunysz <adrien@kunysz.be>
Date: Thu, 14 Nov 2013 23:20:15 +0100
Subject: [PATCH] Return Last-Modified time conform to RFC2616

Section 3.3.1 says it MUST be GMT.
---
 img.go |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/img.go b/img.go
index 1357be9..f123e5a 100644
--- a/img.go
+++ b/img.go
@@ -146,7 +146,11 @@ func getModTime(uri string) (modTime string, err error) {
 	if err != nil {
 		return
 	}
-	modTime = stat.ModTime().Format(time.RFC1123)
+	gmt, err := time.LoadLocation("GMT")
+	if err != nil {
+		return
+	}
+	modTime = stat.ModTime().In(gmt).Format(time.RFC1123)
 	return
 }
 
-- 
1.7.2.5