From month (and earlier):
MediaWiki:Month/en
From month (and earlier).
MediaWiki:Apihelp-feedcontributions-param-month/en
From year (and earlier):
MediaWiki:Year/en
From date (and earlier):
MediaWiki:Date/en
From year (and earlier).
MediaWiki:Apihelp-feedcontributions-param-year/en
Month
MediaWiki:Bs-statistics-month/en
Month
MediaWiki:Centralnotice-month/en
Month
MediaWiki:Bs-extjs-portal-timespan-month/en
Month
MediaWiki:Bs-smartlist-month/en
Month
MediaWiki:Bs-smartlist-ve-period-month-label/en
Month
MediaWiki:Srf-ui-eventcalendar-label-month/en
month
MediaWiki:Wikibasemediainfo-time-precision-month/en
Votes and ratings by month
MediaWiki:Sitemetrics-votes-month/en
This month
MediaWiki:Cx-translator-month-stats-label/en
Previous month
MediaWiki:Srfc previousmonth/en
Next month
MediaWiki:Srfc nextmonth/en
Month (list)
MediaWiki:Srf-ui-eventcalendar-label-listmonth/en
month(s)
MediaWiki:Bs-reminder-repeat-interval-month/en
Present month (name).
MediaWiki:Bs-insertmagic-currentmonthname/en
Present month (abbreviation).
MediaWiki:Bs-insertmagic-currentmonthabbrev/en
Awards by month
MediaWiki:Sitemetrics-awards-month/en
Comments by month
MediaWiki:Sitemetrics-comments-month/en
Foeships by month
MediaWiki:Sitemetrics-foeships-month/en
Friendships by month
MediaWiki:Sitemetrics-friendships-month/en
Gifts by month
MediaWiki:Sitemetrics-gifts-month/en