diff --git a/usr.bin/calendar/calendars/calendar.computer b/usr.bin/calendar/calendars/calendar.computer
index 98b46217fbf8..b34285de41b9 100644
--- a/usr.bin/calendar/calendars/calendar.computer
+++ b/usr.bin/calendar/calendars/calendar.computer
@@ -34,6 +34,7 @@
 04/07	IBM announces System/360, 1964
 04/09	ENIAC Project begun, 1943
 04/20	Apple announces the Apple ][ at the 1st West Coast Computer Faire, 1977
+04/26	First ARM silicon produced, 1985
 04/28	Zilog Z-80 introduced, 1974
 05/01	First BASIC program run at Dartmouth, 1964
 05/06	EDSAC demonstrated, 1949
@@ -58,6 +59,7 @@
 	Temple Univ., Phila, 1948, for symbolic differentiation on the ENIAC
 07/08	Bell Telephone Co. formed (predecessor of AT&T), 1877
 07/08	CDC incorporated, 1957
+07/23	Commodore Amiga 1000 released, 1985
 08/09	First email sent from space by the crew of STS-43, 1991
 08/14	First Unix-based mallet created, 1954
 08/14	IBM PC announced, 1981