diff --git a/17_rewrite_git_history.md b/17_rewrite_git_history.md
new file mode 100644
index 0000000..f67437f
--- /dev/null
+++ b/17_rewrite_git_history.md
@@ -0,0 +1,11 @@
+I always forget how to back date, so here we go ...
+
+> This is dangerous and should be signed off by the omniscience, omnipotence Git him/herself. Rewriting history is evil, in other words.
+
+```bash
+$ git add <file_name>
+$ export GIT_COMMITER_DATE="Sun Jun 15 14:00 2014 +0100"
+$ export GIT_AUTHOR_DATE="Sun Jun 15 14:00 2014 +0100"
+$ git commit -m "so bad"
+$ git push
+```
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diff --git a/readme.md b/readme.md
index 1303ca7..c959ab0 100644
--- a/readme.md
+++ b/readme.md
@@ -16,3 +16,4 @@
 1. **14_html_to_markdown.sh**: Convert all html files in a single directory to markdown
 1. **15_check_my_environment.py**: Pass in a config file based on your environment.
 1. **16_jinja_quick_load.py**: Render a quick Jinja2 template
+1. **17_rewrite_git_history.md**: Backdating/Rewriting Git history (use at your own risk)
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