Hello we are Nick Barkas and Ioannis Barkas from Greece. There is an annoying error in the date command for quite some time when using Greek locale. If date is instructed to print month and day of month, the translation is wrong and looks funny... You have to be able to write Greek in order to understand it and since the bug exists we assume no one from coreutils developers knows Greek. As a result we will explain every month in detail as it will be Greek to you. Remove "LC_TIME=el_GR.UTF-8" from the commands to get the date in English.
This is what you get with "B Y" (month year), which is correct: $ LC_TIME=el_GR.UTF-8 date +"%B %Y" -d "2015-01-01" Ιανουάριος 2015 $ LC_TIME=el_GR.UTF-8 date +"%B %Y" -d "2015-02-01" Φεβρουάριος 2015 $ LC_TIME=el_GR.UTF-8 date +"%B %Y" -d "2015-03-01" Μάρτιος 2015 $ LC_TIME=el_GR.UTF-8 date +"%B %Y" -d "2015-04-01" Απρίλιος 2015 $ LC_TIME=el_GR.UTF-8 date +"%B %Y" -d "2015-05-01" Μάιος 2015 $ LC_TIME=el_GR.UTF-8 date +"%B %Y" -d "2015-06-01" Ιούνιος 2015 $ LC_TIME=el_GR.UTF-8 date +"%B %Y" -d "2015-07-01" Ιούλιος 2015 $ LC_TIME=el_GR.UTF-8 date +"%B %Y" -d "2015-08-01" Αύγουστος 2015 $ LC_TIME=el_GR.UTF-8 date +"%B %Y" -d "2015-09-01" Σεπτέμβριος 2015 $ LC_TIME=el_GR.UTF-8 date +"%B %Y" -d "2015-10-01" Οκτώβριος 2015 $ LC_TIME=el_GR.UTF-8 date +"%B %Y" -d "2015-11-01" Νοέμβριος 2015 $ LC_TIME=el_GR.UTF-8 date +"%B %Y" -d "2015-12-01" Δεκέμβριος 2015 This is what you get with "d B Y" (month year), which is wrong: $ LC_TIME=el_GR.UTF-8 date +"%d %B %Y" -d "2015-01-01" 01 Ιανουάριος 2015 damn@rsee:~$ LC_TIME=el_GR.UTF-8 date +"%d %B %Y" -d "2015-02-01" 01 Φεβρουάριος 2015 damn@rsee:~$ LC_TIME=el_GR.UTF-8 date +"%d %B %Y" -d "2015-03-01" 01 Μάρτιος 2015 damn@rsee:~$ LC_TIME=el_GR.UTF-8 date +"%d %B %Y" -d "2015-04-01" 01 Απρίλιος 2015 damn@rsee:~$ LC_TIME=el_GR.UTF-8 date +"%d %B %Y" -d "2015-05-01" 01 Μάιος 2015 damn@rsee:~$ LC_TIME=el_GR.UTF-8 date +"%d %B %Y" -d "2015-06-01" 01 Ιούνιος 2015 damn@rsee:~$ LC_TIME=el_GR.UTF-8 date +"%d %B %Y" -d "2015-07-01" 01 Ιούλιος 2015 damn@rsee:~$ LC_TIME=el_GR.UTF-8 date +"%d %B %Y" -d "2015-08-01" 01 Αύγουστος 2015 damn@rsee:~$ LC_TIME=el_GR.UTF-8 date +"%d %B %Y" -d "2015-09-01" 01 Σεπτέμβριος 2015 damn@rsee:~$ LC_TIME=el_GR.UTF-8 date +"%d %B %Y" -d "2015-10-01" 01 Οκτώβριος 2015 damn@rsee:~$ LC_TIME=el_GR.UTF-8 date +"%d %B %Y" -d "2015-11-01" 01 Νοέμβριος 2015 damn@rsee:~$ LC_TIME=el_GR.UTF-8 date +"%d %B %Y" -d "2015-12-01" 01 Δεκέμβριος 2015 Here is what the date command should print with "d B Y" (month year), in el_GR.UTF-8 locale: $ LC_TIME=el_GR.UTF-8 date +"%d %B %Y" -d "2015-01-01" 01 Ιανουαρίου 2015 $ LC_TIME=el_GR.UTF-8 date +"%d %B %Y" -d "2015-02-01" 01 Φεβρουαρίου 2015 $ LC_TIME=el_GR.UTF-8 date +"%d %B %Y" -d "2015-03-01" 01 Μαρτίου 2015 $ LC_TIME=el_GR.UTF-8 date +"%d %B %Y" -d "2015-04-01" 01 Απριλίου 2015 $ LC_TIME=el_GR.UTF-8 date +"%d %B %Y" -d "2015-05-01" 01 Μαίου 2015 $ LC_TIME=el_GR.UTF-8 date +"%d %B %Y" -d "2015-06-01" 01 Ιουνίου 2015 $ LC_TIME=el_GR.UTF-8 date +"%d %B %Y" -d "2015-07-01" 01 Ιουλίου 2015 $ LC_TIME=el_GR.UTF-8 date +"%d %B %Y" -d "2015-08-01" 01 Αυγούστου 2015 $ LC_TIME=el_GR.UTF-8 date +"%d %B %Y" -d "2015-09-01" 01 Σεπτεμβρίου 2015 $ LC_TIME=el_GR.UTF-8 date +"%d %B %Y" -d "2015-10-01" 01 Οκτωβρίου 2015 $ LC_TIME=el_GR.UTF-8 date +"%d %B %Y" -d "2015-11-01" 01 Νοεμβρίου 2015 $ LC_TIME=el_GR.UTF-8 date +"%d %B %Y" -d "2015-12-01" 01 Δεκεμβρίου 2015 In Greek language things are different and complex compared to English. We have accents (τόνους) for most words and words are not fixed but can dynamically change depending on context. When the month is accompanied by a day of month the accent (Greek tonos/τόνος) changes and ...ος becomes ...ου. To fix this, use the correct translations for months, if and only if %B and %d are used together. If the month is called with no day (%d) using "%B" or if the month is called with "%d %b" or "%b" leave the translations as they are. Since there are many computer-science oriented Greek universities and so many Greeks around the world, we are amazed that no one fixed it so far. We must also inform you that this silly bug of yours has been seen in webpages.
