diff --git a/README.md b/README.md
index 52ae476..bb68ae1 100644
--- a/README.md
+++ b/README.md
@@ -11,3 +11,13 @@ Run `main.py`.
 - [CSC Mirror](http://mirror.csclub.uwaterloo.ca/)
 - [Debian Mirror Status Checker](https://mirror-master.debian.org/status/mirror-status.html)
 - [Debian Mirror Status Checker Code](https://salsa.debian.org/mirror-team/mirror/status)
+
+if we can just view their repo online, we only have to remember the link for their repo and then check the latest timestamp in their repo the same way we check ours
+
+even if the date relies on a specific file in their repo, we can still find the right link for it
+
+to find repos of the distros to check, just search "distroName mirrors"
+
+ubuntu releases: https://releases.ubuntu.com/?_ga=2.251394307.425973732.1629764407-1388600952.1629764407
+ubuntu mirrors: http://mirrors.ubuntu.com/mirrors.txt
+raspbian mirror: https://mirror.ox.ac.uk/sites/archive.raspbian.org/archive/
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