diff --git a/_kosmorro/geolocation.py b/_kosmorro/geolocation.py
index 5a649b9..7e06988 100644
--- a/_kosmorro/geolocation.py
+++ b/_kosmorro/geolocation.py
@@ -13,9 +13,9 @@ def _parse_latitude_longitude(from_str: str) -> Position:
     if not re.search(r"^([\d.-]+)[,;]([\d.-]+)$", from_str):
         raise ValueError(_("The given position (%s) is not valid." % from_str))
 
-    latitude_longitude = from_str.split(';')
+    latitude_longitude = from_str.split(";")
     if len(latitude_longitude) == 1:
-        latitude_longitude = from_str.split(',')
+        latitude_longitude = from_str.split(",")
 
     return Position(float(latitude_longitude[0]), float(latitude_longitude[1]))
 
@@ -25,13 +25,17 @@ def _parse_plus_code(from_str: str) -> Union[None, Position]:
         return None
 
     if not openlocationcode.isFull(from_str):
-        raise ValueError(_('The given Plus Code seems to be a short code, please provide a full code.'))
+        raise ValueError(
+            _(
+                "The given Plus Code seems to be a short code, please provide a full code."
+            )
+        )
 
     pos = openlocationcode.decode(from_str)
 
     return Position(
         latitude=(pos.latitudeLo + pos.latitudeHi) / 2,
-        longitude=(pos.longitudeLo + pos.longitudeHi) / 2
+        longitude=(pos.longitudeLo + pos.longitudeHi) / 2,
     )
 
 
diff --git a/_kosmorro/locales/messages.pot b/_kosmorro/locales/messages.pot
index 031ef18..b8656b7 100644
--- a/_kosmorro/locales/messages.pot
+++ b/_kosmorro/locales/messages.pot
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: kosmorro 0.10.1\n"
 "Report-Msgid-Bugs-To: EMAIL@ADDRESS\n"
-"POT-Creation-Date: 2021-06-20 16:49+0200\n"
+"POT-Creation-Date: 2021-07-18 17:45+0200\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -116,110 +116,113 @@ msgstr ""
 msgid "The date must be between {minimum_date} and {maximum_date}"
 msgstr ""
 
-#: _kosmorro/main.py:46
+#: _kosmorro/geolocation.py:14
+#, python-format
+msgid "The given position (%s) is not valid."
+msgstr ""
+
+#: _kosmorro/geolocation.py:29
+msgid "The given Plus Code seems to be a short code, please provide a full code."
+msgstr ""
+
+#: _kosmorro/main.py:42
 msgid ""
 "Save the planet and paper!\n"
 "Consider printing your PDF document only if really necessary, and use the"
 " other side of the sheet."
 msgstr ""
 
-#: _kosmorro/main.py:55
+#: _kosmorro/main.py:51
 msgid ""
 "PDF output will not contain the ephemerides, because you didn't provide "
 "the observation coordinates."
 msgstr ""
 
-#: _kosmorro/main.py:100
+#: _kosmorro/main.py:96
 msgid "The file could not be saved in \"{path}\": {error}"
 msgstr ""
 
-#: _kosmorro/main.py:114
+#: _kosmorro/main.py:110
 msgid "Please provide a file path to export in this format (--output)."
 msgstr ""
 
-#: _kosmorro/main.py:147
+#: _kosmorro/main.py:143
 msgid "Moon phase can only be displayed between {min_date} and {max_date}"
 msgstr ""
 
-#: _kosmorro/main.py:186
+#: _kosmorro/main.py:182
 msgid "Running on Python {python_version} with Kosmorrolib v{kosmorrolib_version}"
 msgstr ""
 
-#: _kosmorro/main.py:196
+#: _kosmorro/main.py:192
 msgid "Do you really want to clear Kosmorro's cache? [yN] "
 msgstr ""
 
-#: _kosmorro/main.py:204
+#: _kosmorro/main.py:200
 msgid "Incorrect answer, cache not cleared."
 msgstr ""
 
-#: _kosmorro/main.py:214
+#: _kosmorro/main.py:210
 msgid ""
 "Compute the ephemerides and the events for a given date and a given "
 "position on Earth."
 msgstr ""
 
-#: _kosmorro/main.py:217
+#: _kosmorro/main.py:213
 msgid ""
 "By default, only the events will be computed for today ({date}).\n"
 "To compute also the ephemerides, latitude and longitude arguments are "
 "needed."
 msgstr ""
 
-#: _kosmorro/main.py:231
+#: _kosmorro/main.py:227
 msgid "Show the program version"
 msgstr ""
 
-#: _kosmorro/main.py:239
+#: _kosmorro/main.py:235
 msgid "Delete all the files from Kosmorro's cache."
 msgstr ""
 
-#: _kosmorro/main.py:247
+#: _kosmorro/main.py:243
 msgid "The format to output the information to"
 msgstr ""
 
-#: _kosmorro/main.py:254
-msgid ""
-"The observer's latitude on Earth. Can also be set in the "
-"KOSMORRO_LATITUDE environment variable."
-msgstr ""
-
-#: _kosmorro/main.py:264
+#: _kosmorro/main.py:250
 msgid ""
-"The observer's longitude on Earth. Can also be set in the "
-"KOSMORRO_LONGITUDE environment variable."
+"The observer's position on Earth, in the \"{latitude},{longitude}\" "
+"format.Can also be set in the KOSMORRO_POSITION environment variable."
 msgstr ""
 
-#: _kosmorro/main.py:274
+#: _kosmorro/main.py:260
 msgid ""
 "The date for which the ephemerides must be calculated. Can be in the "
 "YYYY-MM-DD format or an interval in the \"[+-]YyMmDd\" format (with Y, M,"
 " and D numbers). Defaults to today ({default_date})."
 msgstr ""
 
-#: _kosmorro/main.py:285
+#: _kosmorro/main.py:271
 msgid ""
 "The timezone to display the hours in (e.g. 2 for UTC+2 or -3 for UTC-3). "
 "Can also be set in the KOSMORRO_TIMEZONE environment variable."
 msgstr ""
 
-#: _kosmorro/main.py:294
+#: _kosmorro/main.py:280
 msgid "Disable the colors in the console."
 msgstr ""
 
-#: _kosmorro/main.py:301
+#: _kosmorro/main.py:287
 msgid ""
 "A file to export the output to. If not given, the standard output is "
 "used. This argument is needed for PDF format."
 msgstr ""
 
-#: _kosmorro/main.py:310
+#: _kosmorro/main.py:296
 msgid ""
 "Do not generate a graph to represent the rise and set times in the PDF "
 "format."
 msgstr ""
 
-#: _kosmorro/main.py:318
+#: _kosmorro/main.py:304
 msgid "Show debugging messages"
 msgstr ""
 
diff --git a/_kosmorro/main.py b/_kosmorro/main.py
index 234acc8..4c28146 100644
--- a/_kosmorro/main.py
+++ b/_kosmorro/main.py
@@ -35,7 +35,7 @@ def main():
         print(colored(error.args[0], color="red", attrs=["bold"]))
         return -1
 
-    position = get_position(args.position) if args.position is not None else None
+    position = get_position(args.position) if args.position not in [None, ""] else None
 
     if output_format == "pdf":
         print(
@@ -248,7 +248,7 @@ def get_args(output_formats: [str]):
         type=str,
         default=None,
         help=_(
-            "The observer's position on Earth, in the \"{latitude},{longitude}\" format."
+            'The observer\'s position on Earth, in the "{latitude},{longitude}" format.'
             "Can also be set in the KOSMORRO_POSITION environment variable."
         ),
     )
diff --git a/manpage/kosmorro.1.md b/manpage/kosmorro.1.md
index e46662d..c27738f 100644
--- a/manpage/kosmorro.1.md
+++ b/manpage/kosmorro.1.md
@@ -16,11 +16,8 @@
 `--clear-cache`  
     delete all the files Kosmorro stored in the cache
 
-`--latitude=`_LATITUDE_, `-lat` _LATITUDE_  
-    the observer's latitude on Earth
-
-`--longitude=`_LONGITUDE_, `-lon` _LONGITUDE_  
-    the observer's longitude on Earth
+`--position=`"_LATITUDE_,_LONGITUDE_", `-p` "_LATITUDE_,_LONGITUDE"  
+    the observer's position on Earth
 
 `--date=`_DATE_, `-d` _DATE_  
     The date for which the ephemerides must be computed, either in the YYYY-MM-DD format or as an interval in the "[+-]YyMmDd" format (with Y, M, and D numbers); defaults to the current date
@@ -48,11 +45,8 @@ As a consequence, any option that would be given to `kosmorro` will override its
 
 Available environment variables are:
 
-`KOSMORRO_LATITUDE`  
-    the observer's latitude on Earth (alternative to `--latitude`)
-    
-`KOSMORRO_LONGITUDE`  
-    the observer's longitude on Earth (alternative to `--longitude`)
+`KOSMORRO_POSITION`  
+    the observer's position on Earth (alternative to `--position`)
     
 `KOSMORRO_TIMEZONE`  
     the observer's timezone (alternative to `--timezone`)
diff --git a/setup.py b/setup.py
index 25d2468..522247e 100644
--- a/setup.py
+++ b/setup.py
@@ -31,6 +31,7 @@ setup(
         "tabulate",
         "termcolor",
         "python-dateutil",
+        "openlocationcode",
     ],
     classifiers=[
         "Development Status :: 3 - Alpha",