s/epoch/Epoch/

man2/times.2

@@ -180,7 +180,7 @@ SVr1-3 returns
 .I long
 and the struct members are of type
 .I time_t
-although they store clock ticks, not seconds since the epoch.
+although they store clock ticks, not seconds since the Epoch.
 V7 used
 .I long
 for the struct members, because it had no type

man3/ctime.3

@@ -229,7 +229,7 @@ Calling
 also sets the external variable \fItzname\fP with
 information about the current time zone.
 If the specified broken-down
-time cannot be represented as calendar time (seconds since the epoch),
+time cannot be represented as calendar time (seconds since the Epoch),
 .BR mktime ()
 returns a value of
 .I (time_t)(\-1)

man3/ftime.3

@@ -50,9 +50,9 @@ struct timeb {
 .fi
 .in -1i
 .LP
-Here \fItime\fP is the number of seconds since the epoch,
+Here \fItime\fP is the number of seconds since the Epoch,
 \fImillitm\fP is the number of milliseconds since \fItime\fP
-seconds since the epoch, \fItimezone\fP is the local time zone
+seconds since the Epoch, \fItimezone\fP is the local time zone
 measured in minutes of time west of Greenwich, and \fIdstflag\fP
 is a flag that, if non-zero, indicates that Daylight Saving time
 applies locally during the appropriate part of the year.

man3/rtime.3

@@ -21,7 +21,7 @@ RFC\ 868 to obtain the time from a remote machine.
 .LP
 The Time Server Protocol gives the time in seconds since midnight 1900-01-01,
 and this function subtracts the appropriate constant in order to
-convert the result to seconds since midnight 1970-01-01, the Unix epoch.
+convert the result to seconds since midnight 1970-01-01, the Unix Epoch.
 .LP
 When
 .I timeout

man3/strptime.3

@@ -371,7 +371,8 @@ is accepted as a synonym for
 Finally
 .TP
 .B %s
-The number of seconds since the epoch, that is, since 1970-01-01 00:00:00 UTC.
+The number of seconds since the Epoch,
+that is, since 1970-01-01 00:00:00 UTC.
 Leap seconds are not counted unless leap second support is available.
 .LP
 The glibc implementation does not require whitespace between

man4/rtc.4

@@ -243,7 +243,7 @@ argument is a
 .I "unsigned long\ *"
 or a
 .IR "unsigned long" ,
-respectively, and the value returned (or assigned) is the epoch.
+respectively, and the value returned (or assigned) is the Epoch.
 To set the RTC's Epoch the process must be privileged (i.e., have the
 .B CAP_SYS_TIME
 capability).

man5/proc.5

@@ -1113,7 +1113,7 @@ each subsequent column is the total for a particular interrupt.
 The number of context switches that the system underwent.
 .TP
 \fIbtime 769041601\fP
-boot time, in seconds since the epoch (January 1, 1970).
+boot time, in seconds since the Epoch (January 1, 1970).
 .TP
 \fIprocesses 86031\fP
 Number of forks since boot.