Bounty offered: Need "last updated" date in RSS feed

Please test the patch in this issue to see if it solves the problem: 🐛 Date values should be in RFC-822 format, not RFC-2822 Needs review

Thanks - I applied the patch, but the problem is that Advanced RSS doesn't output the custom fields I need. Unsurprisingly, the RSS feed remains unchanged.

I've worked around my problem for now by adding a "last-updated" field - the client will need to update this field manually whenever they make a change to the node. Not ideal, but at least it allows me to work around the issue for now. (The nodes are political officeholders and candidates, so changes will be infrequent.)

Thanks again for looking into it - much appreciated!