diff --git a/server.go b/server.go
index 72e874b..4503262 100644
--- a/server.go
+++ b/server.go
@@ -43,7 +43,7 @@ func showCharts(w http.ResponseWriter, r *http.Request) {
 }
 
 func sendData(w http.ResponseWriter, r *http.Request) {
-	dateSince := strings.SplitAfter(time.Now().UTC().Format(time.RFC3339Nano), "Z")[0]
+	dateSince := strings.Split(time.Now().UTC().Format(time.RFC3339Nano), "Z")[0]
 	sinceQuery := r.FormValue("since")
 	if sinceQuery != "" {
 		newDateSince, err := time.Parse(time.RFC3339Nano, sinceQuery)
@@ -51,7 +51,7 @@ func sendData(w http.ResponseWriter, r *http.Request) {
 			http.Redirect(w, r, ROOT_URL, 303)
 			return
 		}
-		dateSince = strings.SplitAfter(newDateSince.Format(time.RFC3339Nano), "Z")[0]
+		dateSince = strings.Split(newDateSince.Format(time.RFC3339Nano), "Z")[0]
 	}
 	records, err := getSnapshotRecordsFromDb(dateSince)
 	if internalErrorOnErr(fmt.Errorf("couldn't get snapshots from db: %w", err), w, r) { return }