This was the only log with relevant time data /var/log/apache2/access.log:
::1 - - [23/Dec/2016:16:51:28 -0500] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.18 (Ubuntu) (internal dummy connection)"
192.168.1.12 - - [23/Dec/2016:18:01:34 -0500] "GET /timetrex/interface/DownForMaintenance.php?exception=DBError HTTP/1.1" 200 2074 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:50.0) Gecko/20100101 Firefox/50.0"
192.168.1.12 - - [23/Dec/2016:18:01:34 -0500] "GET /timetrex/interface/global.css.php HTTP/1.1" 304 260 "
http://192.168.1.100/timetrex/interface ... on=DBError" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:50.0) Gecko/20100101 Firefox/50.0"
192.168.1.12 - - [23/Dec/2016:18:01:34 -0500] "GET /timetrex/interface/images//timetrex_logo_wbg_small2.png HTTP/1.1" 304 182 "
http://192.168.1.100/timetrex/interface ... on=DBError" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:50.0) Gecko/20100101 Firefox/50.0"
192.168.1.12 - - [23/Dec/2016:18:01:34 -0500] "GET /timetrex/interface/images//facebook_button.jpg HTTP/1.1" 304 182 "
http://192.168.1.100/timetrex/interface ... on=DBError" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:50.0) Gecko/20100101 Firefox/50.0"
192.168.1.12 - - [23/Dec/2016:18:01:34 -0500] "GET /timetrex/interface/images//twitter_button.jpg HTTP/1.1" 304 181 "
http://192.168.1.100/timetrex/interface ... on=DBError" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:50.0) Gecko/20100101 Firefox/50.0"
192.168.1.12 - - [23/Dec/2016:18:01:34 -0500] "GET /timetrex/interface//send_file.php?object_type=copyright HTTP/1.1" 302 889 "
http://192.168.1.100/timetrex/interface ... on=DBError" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:50.0) Gecko/20100101 Firefox/50.0"
192.168.1.12 - - [23/Dec/2016:18:01:34 -0500] "GET /timetrex/interface/images/table_top.gif HTTP/1.1" 304 179 "
http://192.168.1.100/timetrex/interface/global.css.php" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:50.0) Gecko/20100101 Firefox/50.0"
192.168.1.12 - - [23/Dec/2016:18:01:34 -0500] "GET /timetrex/interface/images/table_bottom.gif HTTP/1.1" 304 180 "
http://192.168.1.100/timetrex/interface/global.css.php" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:50.0) Gecko/20100101 Firefox/50.0"
192.168.1.12 - - [23/Dec/2016:18:01:34 -0500] "GET /timetrex/interface/DownForMaintenance.php?exception=DBError HTTP/1.1" 200 2074 "
http://192.168.1.100/timetrex/interface ... on=DBError" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:50.0) Gecko/20100101 Firefox/50.0"
192.168.1.12 - - [23/Dec/2016:18:01:34 -0500] "GET /timetrex/interface/images/spacer.gif HTTP/1.1" 304 179 "
http://192.168.1.100/timetrex/interface ... on=DBError" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:50.0) Gecko/20100101 Firefox/50.0"
192.168.1.12 - - [23/Dec/2016:18:49:02 -0500] "GET /timetrex/interface/DownForMaintenance.php?exception=DBError HTTP/1.1" 200 2075 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:50.0) Gecko/20100101 Firefox/50.0"
192.168.1.12 - - [23/Dec/2016:18:49:03 -0500] "GET /timetrex/interface/global.css.php HTTP/1.1" 304 260 "
http://192.168.1.100/timetrex/interface ... on=DBError" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:50.0) Gecko/20100101 Firefox/50.0"
192.168.1.12 - - [23/Dec/2016:18:49:03 -0500] "GET /timetrex/interface/images//timetrex_logo_wbg_small2.png HTTP/1.1" 304 181 "
http://192.168.1.100/timetrex/interface ... on=DBError" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:50.0) Gecko/20100101 Firefox/50.0"
192.168.1.12 - - [23/Dec/2016:18:49:03 -0500] "GET /timetrex/interface/images//facebook_button.jpg HTTP/1.1" 304 182 "
http://192.168.1.100/timetrex/interface ... on=DBError" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:50.0) Gecko/20100101 Firefox/50.0"
192.168.1.12 - - [23/Dec/2016:18:49:03 -0500] "GET /timetrex/interface/images//twitter_button.jpg HTTP/1.1" 304 181 "
http://192.168.1.100/timetrex/interface ... on=DBError" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:50.0) Gecko/20100101 Firefox/50.0"
192.168.1.12 - - [23/Dec/2016:18:49:03 -0500] "GET /timetrex/interface/images/table_bottom.gif HTTP/1.1" 304 180 "
http://192.168.1.100/timetrex/interface/global.css.php" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:50.0) Gecko/20100101 Firefox/50.0"
192.168.1.12 - - [23/Dec/2016:18:49:03 -0500] "GET /timetrex/interface/images/table_top.gif HTTP/1.1" 304 179 "
http://192.168.1.100/timetrex/interface/global.css.php" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:50.0) Gecko/20100101 Firefox/50.0"
192.168.1.12 - - [23/Dec/2016:18:49:03 -0500] "GET /timetrex/interface//send_file.php?object_type=copyright HTTP/1.1" 302 953 "
http://192.168.1.100/timetrex/interface ... on=DBError" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:50.0) Gecko/20100101 Firefox/50.0"
192.168.1.12 - - [23/Dec/2016:18:49:03 -0500] "GET /timetrex/interface/images/spacer.gif HTTP/1.1" 304 179 "
http://192.168.1.100/timetrex/interface ... on=DBError" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:50.0) Gecko/20100101 Firefox/50.0"
192.168.1.12 - - [23/Dec/2016:18:49:03 -0500] "GET /timetrex/interface/html5/index.php?installer=1&disable_db=1&external_installer=0 HTTP/1.1" 200 3105 "
http://192.168.1.100/timetrex/interface ... on=DBError" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:50.0) Gecko/20100101 Firefox/50.0"
::1 - - [23/Dec/2016:18:49:09 -0500] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.18 (Ubuntu) (internal dummy connection)"
::1 - - [23/Dec/2016:18:49:10 -0500] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.18 (Ubuntu) (internal dummy connection)"
::1 - - [23/Dec/2016:18:49:11 -0500] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.18 (Ubuntu) (internal dummy connection)"