New port: misc/timediff

timediff is a simple command line tool to show time pairs
between target timezone and localtime.

$ date
Mon Aug 29 23:10:36 EDT 2016

$ timediff Tokyo
2016-08-30 12:10 JST 2016-08-29 23:10 EDT
2016-08-30 13:10 JST 2016-08-30 00:10 EDT
2016-08-30 14:10 JST 2016-08-30 01:10 EDT
2016-08-30 15:10 JST 2016-08-30 02:10 EDT
2016-08-30 16:10 JST 2016-08-30 03:10 EDT
2016-08-30 17:10 JST 2016-08-30 04:10 EDT
2016-08-30 18:10 JST 2016-08-30 05:10 EDT
2016-08-30 19:10 JST 2016-08-30 06:10 EDT
2016-08-30 20:10 JST 2016-08-30 07:10 EDT
2016-08-30 21:10 JST 2016-08-30 08:10 EDT

The answer is 14:10 JST.

Here is short history of timediff.
timediff is written by Minmin (is a nickname of github account).
He showed it in 20th FreeBSD Workshop Tokyo on Aug, 1st.

WWW: https://github.com/belgianbeer/timediff

PR: 212255
Submitted by: Naito Yuichiro <naito.yuichiro@gmail.com>
Reviewed by: feld (mentor)
Approved by: feld (mentor)