diff --git a/man8/zdump.8 b/man8/zdump.8
index 00ca4b6e0..1438cd4d0 100644
--- a/man8/zdump.8
+++ b/man8/zdump.8
@@ -2,7 +2,7 @@
 .\" This page is in the public domain
 .\" %%%LICENSE_END
 .\"
-.TH ZDUMP 8 2019-03-06 "" "Linux System Administration"
+.TH ZDUMP 8 2020-04-27 "" "Linux System Administration"
 .SH NAME
 zdump \- timezone dumper
 .SH SYNOPSIS
@@ -78,11 +78,11 @@ implementations with different time representations.
 Cut off interval output at the given year(s).
 Cutoff times are computed using the proleptic Gregorian calendar with year 0
 and with Universal Time (UT) ignoring leap seconds.
-The lower bound is exclusive and the upper is inclusive; for example, a
-.I loyear
-of 1970 excludes a transition occurring at 1970-01-01 00:00:00 UTC but a
-.I hiyear
-of 1970 includes the transition.
+Cutoffs are at the start of each year, where the lower-bound
+timestamp is exclusive and the upper is inclusive; for example,
+.B "\*-c 1970,2070"
+selects transitions after 1970-01-01 00:00:00 UTC
+and on or before 2070-01-01 00:00:00 UTC.
 The default cutoff is
 .BR \*-500,2500 .
 .TP
@@ -154,15 +154,16 @@ tabbed columns line up.)
 .if \n(.g .ft CW
 .if t .in +.5i
 .if n .in +2
-.nr w \w'1896-01-13 'u
-.ta \nwu +\nwu +\nwu +\nwu
+.nr w \w'1896-01-13  'u+\n(.i
+.ta \w'1896-01-13  'u +\w'12:01:26  'u +\w'-103126  'u +\w'HWT  'u
 TZ="Pacific/Honolulu"
--	-	-10:31:26	LMT
-1896-01-13	12:01:26	-10:30	HST
-1933-04-30	03	-09:30	HDT	1
-1933-05-21	11	-10:30	HST
-1942-02-09	03	-09:30	HDT	1
-1945-09-30	01	-10:30	HST
+-	-	-103126	LMT
+1896-01-13	12:01:26	-1030	HST
+1933-04-30	03	-0930	HDT	1
+1933-05-21	11	-1030	HST
+1942-02-09	03	-0930	HWT	1
+1945-08-14	13:30	-0930	HPT	1
+1945-09-30	01	-1030	HST
 1947-06-08	02:30	-10	HST
 .in
 .if \n(.g .ft
@@ -187,7 +188,7 @@ Here are excerpts from another example:
 .if t .in +.5i
 .if n .in +2
 TZ="Europe/Astrakhan"
--	-	+03:12:12	LMT
+-	-	+031212	LMT
 1924-04-30	23:47:48	+03
 1930-06-21	01	+04
 1981-04-01	01	+05		1
@@ -215,7 +216,7 @@ and
 output,
 .q "UT"
 denotes the value returned by
-.BR gmtime (3),
+.IR gmtime (3),
 which uses UTC for modern timestamps and some other UT flavor for
 timestamps that predate the introduction of UTC.
 No attempt is currently made to have the output use