Default monitor profiles do not have a calibration date.
Richard Hughes
richard@hughsie.com
松澤 二郎
jmatsuzawa@gnome.org 2011, 2012, 2013, 2014, 2015
赤星 柔充
yasumichi@vinelinux.org 2011, 2012
Kentaro KAZUHAMA
kazken3@gmail.com 2012
Shushi Kurose
md81bird@hitaki.net 2012
Noriko Mizumoto
noriko@fedoraproject.org 2013, 2014
坂本 貴史
o-takashi@sakamocchi.jp 2013, 2014
日本GNOMEユーザー会
http://www.gnome.gr.jp/ 2011, 2012

# Why don’t the default monitor profiles have a calibration expiry?

The default color profile used for each monitor is generated automatically based on the display EDID which is stored in a memory chip inside the monitor. The EDID only gives us a snapshot of the available colors the monitor was capable of displaying when it was manufactured, and does not contain much other information for color correction.

Getting a profile from the monitor vendor or creating a profile yourself would lead to more accurate color correction.