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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 b944373..8709341 100644
--- a/src/io.c
+++ b/src/io.c
@@ -622,7 +622,11 @@ ical_export_apoints (FILE *stream)
date_sec2date_fmt (apt->start, ICALDATETIMEFMT, ical_datetime);
(void)fprintf (stream, "BEGIN:VEVENT\n");
(void)fprintf (stream, "DTSTART:%s\n", ical_datetime);
- (void)fprintf (stream, "DURATION:PT0H0M%ldS\n", apt->dur);
+ (void)fprintf (stream, "DURATION:P%ldDT%ldH%ldM%ldS\n",
+ apt->dur / DAYINSEC,
+ (apt->dur / HOURINSEC) % 24,
+ (apt->dur / MININSEC) % 60,
+ apt->dur % MININSEC);
(void)fprintf (stream, "SUMMARY:%s\n", apt->mesg);
if (apt->state & APOINT_NOTIFY)
ical_export_valarm (stream);