diff --git a/core/utils.py b/core/utils.py
index eeb3c6a..39233d3 100644
--- a/core/utils.py
+++ b/core/utils.py
@@ -36,6 +36,9 @@ This needs to be in a multi-user database with transactions. However it may be
 useful when doing a data import with databaseReset.py as that has a single
 thread.
 
+TIMEZONES
+Read this now: https://nerderati.com/a-python-epoch-timestamp-timezone-trap/
+
 """
 
 TROG = {"pagecache": {"expedition": {}}, "caves": {"gcavelookup": {}, "gcavecount": {}}}