diff --git a/main.go b/main.go
index e9d90bd..8ca41b3 100644
--- a/main.go
+++ b/main.go
@@ -1,3 +1,4 @@
+// TODO: Make TimescaleDB optional.
 package main
 
 import (
@@ -245,6 +246,15 @@ func mqttMessageHandler(client mqtt.Client, msg mqtt.Message) {
 	}
 }
 
+// parseDSMRTimestamp parses the timestamp as emitted by the P1 meter
+// (YYMMDDhhmmssX, where X is S or W for summer- or wintertime).
+//
+// More information:
+// https://github.com/matthijskooijman/arduino-dsmr/blob/master/README.md
+// https://srolija.medium.com/gos-summer-time-localization-issues-4c8ab702806b
+// https://github.com/thomasvnl/P1DSMRReader-ESPHome
+// https://pkg.go.dev/github.com/mijnverbruik/dsmr#Timestamp.Position
+// https://pkg.go.dev/github.com/mijnverbruik/dsmr#Timestamp
 func parseDSMRTimestamp(t string) (time.Time, error) {
 
 	// Extract values from timestamp string