diff --git a/calsocial/translations/pl/LC_MESSAGES/messages.po b/calsocial/translations/pl/LC_MESSAGES/messages.po
new file mode 100644
index 0000000..afc9baf
--- /dev/null
+++ b/calsocial/translations/pl/LC_MESSAGES/messages.po
@@ -0,0 +1,466 @@
+# Polish template for Calendar.social.
+# Copyright (C) 2018 Marcin Mikołajczak
+# This file is distributed under the same license as the Calendar.social project.
+# Marcin Mikołajczak <me@m4sk.in>, 2018.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: 0.1\n"
+"Report-Msgid-Bugs-To: gergely@polonkai.eu\n"
+"POT-Creation-Date: 2018-07-30 22:05+0200\n"
+"PO-Revision-Date: 2018-07-30 22:23+0200\n"
+"Language-Team: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Generated-By: Babel 2.6.0\n"
+"X-Generator: Poedit 2.0.9\n"
+"Last-Translator: Marcin Mikołajczak <me@m4sk.in>\n"
+"Plural-Forms: nplurals=3; plural=(n==1 ? 0 : n%10>=2 && n%10<=4 && (n%100<10 "
+"|| n%100>=20) ? 1 : 2);\n"
+"Language: pl\n"
+
+#: calsocial/account.py:227
+msgid "Can’t invalidate your current session"
+msgstr "Nie udało się unieważnić obecnej sesji"
+
+#: calsocial/forms.py:57
+msgid "This username is not available"
+msgstr "Ta nazwa użytkownika nie jest dostepna"
+
+#: calsocial/forms.py:88
+msgid "This email address can not be used"
+msgstr "Nie można użyć tego adresu e-mail"
+
+#: calsocial/forms.py:100
+msgid "Username"
+msgstr "Nazwa użytkownika"
+
+#: calsocial/forms.py:101
+msgid "Email address"
+msgstr "Adres e-mail"
+
+#: calsocial/forms.py:102
+msgid "Password"
+msgstr "Hasło"
+
+#: calsocial/forms.py:103
+msgid "Password, once more"
+msgstr "Potwórz hasło"
+
+#: calsocial/forms.py:112
+msgid "The two passwords must match!"
+msgstr "Hasła muszą do siebie pasować!"
+
+#: calsocial/forms.py:219
+msgid "Title"
+msgstr "Tytuł"
+
+#: calsocial/forms.py:220 calsocial/forms.py:260
+msgid "Time zone"
+msgstr "Strefa czasowa"
+
+#: calsocial/forms.py:221
+msgid "Start time"
+msgstr "Czas rozpoczęcia"
+
+#: calsocial/forms.py:222
+msgid "End time"
+msgstr "Czas zakończenia"
+
+#: calsocial/forms.py:223
+msgid "All day"
+msgstr "Cały dzień"
+
+#: calsocial/forms.py:224
+msgid "Description"
+msgstr "Opis"
+
+#: calsocial/forms.py:225
+msgid "Visibility"
+msgstr "Widoczność"
+
+#: calsocial/forms.py:253
+msgid "End time must be later than start time!"
+msgstr "Czas zakończenia musi nastąpić po czasie rozpoczęcia!"
+
+#: calsocial/forms.py:284
+msgid "Username or email"
+msgstr "Nazwa użytkownika lub adres e-mail"
+
+#: calsocial/forms.py:372
+msgid "User is already invited"
+msgstr "Użytkownik został już zaproszony"
+
+#: calsocial/forms.py:382 calsocial/forms.py:396
+msgid "Display name"
+msgstr "Nazwa wyświetlana"
+
+#: calsocial/forms.py:385
+msgid ""
+"This will be shown to other users as your name.  You can use your real name, "
+"or any nickname you like."
+msgstr ""
+"Będzie widoczna dla innych użytkowników jako Twoja nazwa. Może to być Twoje "
+"imię i nazwisko lub dowolny pseudonim."
+
+#: calsocial/forms.py:387
+msgid "Your time zone"
+msgstr "Twoja strefa czasowa"
+
+#: calsocial/forms.py:389
+msgid "The start and end times of events will be displayed in this time zone."
+msgstr ""
+"Czas rozpoczęcia i zakończenia wydarzeń będą widoczne w tej strefie czasowej."
+
+#: calsocial/forms.py:397
+msgid "Use a built-in avatar"
+msgstr "Użyj wbudowanego awatara"
+
+#: calsocial/forms.py:398
+msgid "Lock profile"
+msgstr "Zablokuj konto"
+
+#: calsocial/models.py:75
+#, python-format
+msgid "%(actor)s followed you"
+msgstr "%(actor)s zaczął Cię śledzić"
+
+#: calsocial/models.py:75
+#, python-format
+msgid "%(actor)s followed %(item)s"
+msgstr "%(actor)s zaczął śledzić %(item)s"
+
+#: calsocial/models.py:76
+#, python-format
+msgid "%(actor)s invited you to %(item)s"
+msgstr "%(actor)s zaprosił Cię na %(item)s"
+
+#: calsocial/models.py:121
+msgid "Visible only to attendees"
+msgstr "Widoczne tylko dla uczestników"
+
+#: calsocial/models.py:122
+msgid "Visible to everyone"
+msgstr "Widoczne dla wszystkich"
+
+#: calsocial/models.py:542
+#, python-format
+msgid "%(user)s logged in"
+msgstr "%(user)s zalogował się"
+
+#: calsocial/models.py:543
+#, python-format
+msgid "%(user)s failed to log in"
+msgstr "nie udało się zalogować %(user)s"
+
+#: calsocial/models.py:544
+#, python-format
+msgid "%(user)s logged out"
+msgstr "%(user)s wylogował się"
+
+#: calsocial/models.py:561
+#, python-format
+msgid "UNKNOWN RECORD \"%(log_type)s\" for %(user)s"
+msgstr "NIEZNANY WPIS \"%(log_type)s\" dla %(user)s"
+
+#: calsocial/calendar_system/gregorian.py:31
+msgid "Gregorian"
+msgstr "Gregoriański"
+
+#: calsocial/calendar_system/gregorian.py:39
+msgid "January"
+msgstr "Styczeń"
+
+#: calsocial/calendar_system/gregorian.py:40
+msgid "February"
+msgstr "Luty"
+
+#: calsocial/calendar_system/gregorian.py:41
+msgid "March"
+msgstr "Marzec"
+
+#: calsocial/calendar_system/gregorian.py:42
+msgid "April"
+msgstr "Kwiecień"
+
+#: calsocial/calendar_system/gregorian.py:43
+msgid "May"
+msgstr "Maj"
+
+#: calsocial/calendar_system/gregorian.py:44
+msgid "June"
+msgstr "Czerwiec"
+
+#: calsocial/calendar_system/gregorian.py:45
+msgid "July"
+msgstr "Lipiec"
+
+#: calsocial/calendar_system/gregorian.py:46
+msgid "August"
+msgstr "Sierpień"
+
+#: calsocial/calendar_system/gregorian.py:47
+msgid "September"
+msgstr "Wrzesień"
+
+#: calsocial/calendar_system/gregorian.py:48
+msgid "October"
+msgstr "Październik"
+
+#: calsocial/calendar_system/gregorian.py:49
+msgid "November"
+msgstr "Listopad"
+
+#: calsocial/calendar_system/gregorian.py:50
+msgid "December"
+msgstr "Grudzień"
+
+#: calsocial/calendar_system/gregorian.py:54
+msgid "Monday"
+msgstr "Poniedziałek"
+
+#: calsocial/calendar_system/gregorian.py:55
+msgid "Tuesday"
+msgstr "Wtorek"
+
+#: calsocial/calendar_system/gregorian.py:56
+msgid "Wednesday"
+msgstr "Środa"
+
+#: calsocial/calendar_system/gregorian.py:57
+msgid "Thursday"
+msgstr "Czwartek"
+
+#: calsocial/calendar_system/gregorian.py:58
+msgid "Friday"
+msgstr "Piątek"
+
+#: calsocial/calendar_system/gregorian.py:59
+msgid "Saturday"
+msgstr "Sobota"
+
+#: calsocial/calendar_system/gregorian.py:60
+msgid "Sunday"
+msgstr "Niedziela"
+
+#: calsocial/templates/base.html:29 calsocial/templates/login.html:9
+#: calsocial/templates/login.html:24 calsocial/templates/welcome.html:9
+#: calsocial/templates/welcome.html:16
+msgid "Login"
+msgstr "Zaloguj się"
+
+#: calsocial/templates/base.html:32
+#, python-format
+msgid "Logged in as %(username)s"
+msgstr "Zalogowano jako %(username)s"
+
+#: calsocial/templates/base.html:36
+msgid "Calendar view"
+msgstr "Widok kalendarza"
+
+#: calsocial/templates/base.html:37
+msgid "Notifications"
+msgstr "Powiadomienia"
+
+#: calsocial/templates/account/settings-base.html:8
+#: calsocial/templates/account/user-settings.html:5
+#: calsocial/templates/base.html:38
+msgid "Settings"
+msgstr "Ustawienia"
+
+#: calsocial/templates/base.html:39
+msgid "Logout"
+msgstr "Wyloguj się"
+
+#: calsocial/templates/base.html:48
+msgid "About this instance"
+msgstr "O tej instancji"
+
+#: calsocial/templates/event-details.html:5
+#, python-format
+msgid ""
+"This event is organised in the %(timezone)s time zone, in which it happens "
+"between %(start_time)s and %(end_time)s"
+msgstr ""
+"To wydarzenie jest organizowane w strefie czasowej %(timezone)s, w której "
+"wydarzy się ono pomiędzy %(start_time)s a %(end_time)s"
+
+#: calsocial/templates/event-details.html:29
+msgid "Invited users"
+msgstr "Zaproszeni użytkownicy"
+
+#: calsocial/templates/event-details.html:41
+#: calsocial/templates/event-details.html:47
+msgid "Invite"
+msgstr "Zaproś"
+
+#: calsocial/templates/account/first-steps.html:25
+#: calsocial/templates/account/profile-edit.html:20
+#: calsocial/templates/account/user-settings.html:18
+#: calsocial/templates/event-edit.html:24
+msgid "Save"
+msgstr "Zapisz"
+
+#: calsocial/templates/index.html:4
+#, python-format
+msgid "Welcome to Calendar.social, %(username)s!"
+msgstr "Witaj na Calendar.social, %(username)s!"
+
+#: calsocial/templates/index.html:10
+msgid "Add event"
+msgstr "Dodaj wydarzenie"
+
+#: calsocial/templates/profile-details.html:10
+#: calsocial/templates/profile-details.html:11
+msgid "locked profile"
+msgstr "profil zablokowany"
+
+#: calsocial/templates/profile-details.html:17
+msgid "Follow"
+msgstr "Obserwuj"
+
+#: calsocial/templates/profile-details.html:21
+msgid "Follows"
+msgstr "Obserwacje"
+
+#: calsocial/templates/profile-details.html:29
+msgid "Followers"
+msgstr "Obserwujący"
+
+#: calsocial/templates/welcome.html:20
+msgid "Or"
+msgstr "Lub"
+
+#: calsocial/templates/welcome.html:22
+msgid "Register an account"
+msgstr "Zarejestruj się"
+
+#: calsocial/templates/welcome.html:26
+msgid "What is Calendar.social?"
+msgstr "Czym jest Calendar.social?"
+
+#: calsocial/templates/welcome.html:28
+msgid ""
+"Calendar.social is a calendar app based on open protocols and free, open "
+"source software."
+msgstr ""
+"Calendar.social jest aplikacją kalendarza opartą na otwartych protokołach i "
+"wolnym, otwartoźródłowym oprogramowaniu."
+
+#: calsocial/templates/welcome.html:29
+msgid "It is decentralised like one of its counterparts, email."
+msgstr ""
+"Jest zdecentralizowana tak, jak jak jeden z jej odpowiedników – e-mail."
+
+#: calsocial/templates/welcome.html:33
+msgid "Go to your calendar"
+msgstr "Przejdź do swojego kalendarza"
+
+#: calsocial/templates/welcome.html:37
+msgid "Peek inside"
+msgstr "Zajrzyj do środka"
+
+#: calsocial/templates/welcome.html:43
+msgid "Built with users in mind"
+msgstr "Stworzony z myślą o użytkownikach"
+
+#: calsocial/templates/welcome.html:45
+msgid ""
+"From planning your appointments to organising large scale events Calendar."
+"social can help with all your scheduling needs."
+msgstr ""
+"Calendar.social może pomóc w każdej potrzebie związanej z planowaniem, od "
+"planowania spotkań do organizowania wydarzeń na większą skalę."
+
+#: calsocial/templates/welcome.html:54
+msgid "user"
+msgid_plural "users"
+msgstr[0] "użytkownik"
+msgstr[1] "użytkowników"
+msgstr[2] "użytkowników"
+
+#: calsocial/templates/welcome.html:60
+msgid "event"
+msgid_plural "events"
+msgstr[0] "wydarzenia"
+msgstr[1] "wydarzenia"
+msgstr[2] "wydarzeń"
+
+#: calsocial/templates/welcome.html:67
+msgid "Built for people"
+msgstr "Zbudowany dla ludzi"
+
+#: calsocial/templates/welcome.html:69
+msgid "Calendar.social is not a commercial network."
+msgstr "Calendar.social nie jest komercyjną siecią."
+
+#: calsocial/templates/welcome.html:70
+msgid "No advertising, no data mining, no walled gardens."
+msgstr "Brak reklam, zbierania danych i ograniczeń."
+
+#: calsocial/templates/welcome.html:71
+msgid "There is no central authority."
+msgstr "Brak centralnej władzy."
+
+#: calsocial/templates/welcome.html:77
+msgid "Administered by"
+msgstr "Administrowane przez"
+
+#: calsocial/templates/account/active-sessions.html:4
+#: calsocial/templates/account/settings-base.html:9
+msgid "Active sessions"
+msgstr "Aktywne sesje"
+
+#: calsocial/templates/account/active-sessions.html:10
+msgid "Invalidate"
+msgstr "Unieważnij"
+
+#: calsocial/templates/account/first-steps.html:5
+msgid "First steps"
+msgstr "Pierwsze kroki"
+
+#: calsocial/templates/account/first-steps.html:7
+msgid "Welcome to Calendar.social!"
+msgstr "Witamy na Calendar.social!"
+
+#: calsocial/templates/account/first-steps.html:10
+msgid ""
+"These are the first steps you should make before you can start using the "
+"site."
+msgstr ""
+"Oto pierwsze kroki, które powinieneś wykonać, zanim zaczniesz używać tej "
+"strony."
+
+#: calsocial/templates/account/follow-requests.html:4
+msgid "Follow requests"
+msgstr "Prośby o możliwość obserwacji"
+
+#: calsocial/templates/account/follow-requests.html:10
+msgid "Accept"
+msgstr "Zaakceptuj"
+
+#: calsocial/templates/account/follow-requests.html:15
+msgid "No requests to display."
+msgstr "Brak próśb do wyświetlenia."
+
+#: calsocial/templates/account/follow-requests.html:19
+msgid "Your profile is not locked."
+msgstr "Twój profil nie jest zablokowany."
+
+#: calsocial/templates/account/follow-requests.html:20
+msgid "Anyone can follow you without your consent."
+msgstr "Każdy może Cię zaobserwować bez Twojego zezwolenia."
+
+#: calsocial/templates/account/notifications.html:7
+msgid "Nothing to show."
+msgstr "Nie ma nic do pokazania."
+
+#: calsocial/templates/account/profile-edit.html:5
+#: calsocial/templates/account/settings-base.html:7
+msgid "Edit profile"
+msgstr "Edytuj profil"
+
+#: calsocial/templates/account/registration.html:17
+msgid "Register"
+msgstr "Zarejestruj się"