-DTSTART;VALUE=DATE:{$e.date|date_format:"%Y%m%d"}\r
-DTEND;VALUE=DATE:{$e.tomorrow|date_format:"%Y%m%d"}\r
-UID:anniv-{$e.date|date_format:"%Y%m%d"}-{$e.bestalias}@polytechnique.org\r
+DTSTART;VALUE=DATE:{$e.date}\r
+DTEND;VALUE=DATE:{$e.tomorrow}\r
+UID:anniv-{$e.date}-{$e.hruid}@{#globals.mail.domain#}\r
+RRULE:FREQ=YEARLY;INTERVAL=1\r