RSS2 expects lastBuildDate to be GMT.

punchagan · punchagan · commit fc93c5d51512 · 2015-01-17T04:55:32.000+05:30
PyRSS2Gen expects the lastBuildDate to be in GMT, and ignores any
timezone information when generating the RSS.
diff --git a/nikola/nikola.py b/nikola/nikola.py
@@ -1021,7 +1021,7 @@ def generic_rss_renderer(self, lang, title, link, description, timeline, output_
             title=title,
             link=link,
             description=description,
-            lastBuildDate=datetime.datetime.now(),
+            lastBuildDate=datetime.datetime.utcnow(),
             generator='http://getnikola.com/',
             language=lang
         )
diff --git a/nikola/plugins/task/galleries.py b/nikola/plugins/task/galleries.py
@@ -575,7 +575,7 @@ def make_url(url):
             title=title,
             link=make_url(permalink),
             description='',
-            lastBuildDate=datetime.datetime.now(),
+            lastBuildDate=datetime.datetime.utcnow(),
             items=items,
             generator='http://getnikola.com/',
             language=lang

Original file line number	Diff line number	Diff line change
`@@ -1021,7 +1021,7 @@ def generic_rss_renderer(self, lang, title, link, description, timeline, output_`
`1021`	`1021`	`title=title,`
`1022`	`1022`	`link=link,`
`1023`	`1023`	`description=description,`
`1024`		`- lastBuildDate=datetime.datetime.now(),`
	`1024`	`+ lastBuildDate=datetime.datetime.utcnow(),`
`1025`	`1025`	`generator='http://getnikola.com/',`
`1026`	`1026`	`language=lang`
`1027`	`1027`	`)`