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-rw-r--r--src/io.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/src/io.c b/src/io.c
index e42d3cf..62b113e 100644
--- a/src/io.c
+++ b/src/io.c
@@ -615,7 +615,11 @@ ical_export_apoints (FILE *stream)
date_sec2date_fmt (apt->start, ICALDATETIMEFMT, ical_datetime);
fputs ("BEGIN:VEVENT\n", stream);
fprintf (stream, "DTSTART:%s\n", ical_datetime);
- fprintf (stream, "DURATION:PT0H0M%ldS\n", apt->dur);
+ fprintf (stream, "DURATION:P%ldDT%ldH%ldM%ldS\n",
+ apt->dur / DAYINSEC,
+ (apt->dur / HOURINSEC) % DAYINHOURS,
+ (apt->dur / MININSEC) % HOURINMIN,
+ apt->dur % MININSEC);
fprintf (stream, "SUMMARY:%s\n", apt->mesg);
if (apt->state & APOINT_NOTIFY)
ical_export_valarm (stream);