diff --git a/lib/arrow/_version.py b/lib/arrow/_version.py
index c68196d1..a955fdae 100644
--- a/lib/arrow/_version.py
+++ b/lib/arrow/_version.py
@@ -1 +1 @@
-__version__ = "1.2.0"
+__version__ = "1.2.1"
diff --git a/lib/arrow/arrow.py b/lib/arrow/arrow.py
index ad95cacd..fef66c10 100644
--- a/lib/arrow/arrow.py
+++ b/lib/arrow/arrow.py
@@ -75,6 +75,7 @@ _GRANULARITY = Literal[
     "day",
     "week",
     "month",
+    "quarter",
     "year",
 ]
 
@@ -132,6 +133,7 @@ class Arrow:
     _SECS_PER_DAY: Final[int] = 60 * 60 * 24
     _SECS_PER_WEEK: Final[int] = 60 * 60 * 24 * 7
     _SECS_PER_MONTH: Final[float] = 60 * 60 * 24 * 30.5
+    _SECS_PER_QUARTER: Final[float] = 60 * 60 * 24 * 30.5 * 3
     _SECS_PER_YEAR: Final[int] = 60 * 60 * 24 * 365
 
     _SECS_MAP: Final[Mapping[TimeFrameLiteral, float]] = {
@@ -141,6 +143,7 @@ class Arrow:
         "day": _SECS_PER_DAY,
         "week": _SECS_PER_WEEK,
         "month": _SECS_PER_MONTH,
+        "quarter": _SECS_PER_QUARTER,
         "year": _SECS_PER_YEAR,
     }
 
@@ -1245,12 +1248,14 @@ class Arrow:
                     delta = sign * delta_second / self._SECS_PER_WEEK
                 elif granularity == "month":
                     delta = sign * delta_second / self._SECS_PER_MONTH
+                elif granularity == "quarter":
+                    delta = sign * delta_second / self._SECS_PER_QUARTER
                 elif granularity == "year":
                     delta = sign * delta_second / self._SECS_PER_YEAR
                 else:
                     raise ValueError(
                         "Invalid level of granularity. "
-                        "Please select between 'second', 'minute', 'hour', 'day', 'week', 'month' or 'year'."
+                        "Please select between 'second', 'minute', 'hour', 'day', 'week', 'month', 'quarter' or 'year'."
                     )
 
                 if trunc(abs(delta)) != 1:
@@ -1258,6 +1263,13 @@ class Arrow:
                 return locale.describe(granularity, delta, only_distance=only_distance)
 
             else:
+
+                if not granularity:
+                    raise ValueError(
+                        "Empty granularity list provided. "
+                        "Please select one or more from 'second', 'minute', 'hour', 'day', 'week', 'month', 'quarter', 'year'."
+                    )
+
                 timeframes: List[Tuple[TimeFrameLiteral, float]] = []
 
                 def gather_timeframes(_delta: float, _frame: TimeFrameLiteral) -> float:
@@ -1275,6 +1287,7 @@ class Arrow:
                 delta = float(delta_second)
                 frames: Tuple[TimeFrameLiteral, ...] = (
                     "year",
+                    "quarter",
                     "month",
                     "week",
                     "day",
@@ -1288,7 +1301,7 @@ class Arrow:
                 if len(timeframes) < len(granularity):
                     raise ValueError(
                         "Invalid level of granularity. "
-                        "Please select between 'second', 'minute', 'hour', 'day', 'week', 'month' or 'year'."
+                        "Please select between 'second', 'minute', 'hour', 'day', 'week', 'month', 'quarter' or 'year'."
                     )
 
                 return locale.describe_multi(timeframes, only_distance=only_distance)
diff --git a/lib/arrow/constants.py b/lib/arrow/constants.py
index 085ec392..e41ffa5d 100644
--- a/lib/arrow/constants.py
+++ b/lib/arrow/constants.py
@@ -143,4 +143,6 @@ DEHUMANIZE_LOCALES = {
     "ta",
     "ta-in",
     "ta-lk",
+    "ur",
+    "ur-pk",
 }
diff --git a/lib/arrow/locales.py b/lib/arrow/locales.py
index 6221df7a..d6d5c486 100644
--- a/lib/arrow/locales.py
+++ b/lib/arrow/locales.py
@@ -35,6 +35,8 @@ TimeFrameLiteral = Literal[
     "weeks",
     "month",
     "months",
+    "quarter",
+    "quarters",
     "year",
     "years",
 ]
@@ -98,6 +100,8 @@ class Locale:
         "weeks": "",
         "month": "",
         "months": "",
+        "quarter": "",
+        "quarters": "",
         "year": "",
         "years": "",
     }
@@ -314,6 +318,8 @@ class EnglishLocale(Locale):
         "weeks": "{0} weeks",
         "month": "a month",
         "months": "{0} months",
+        "quarter": "a quarter",
+        "quarters": "{0} quarters",
         "year": "a year",
         "years": "{0} years",
     }
@@ -2447,7 +2453,7 @@ class AzerbaijaniLocale(Locale):
 
     timeframes = {
         "now": "indi",
-        "second": "saniyə",
+        "second": "bir saniyə",
         "seconds": "{0} saniyə",
         "minute": "bir dəqiqə",
         "minutes": "{0} dəqiqə",
@@ -2455,9 +2461,11 @@ class AzerbaijaniLocale(Locale):
         "hours": "{0} saat",
         "day": "bir gün",
         "days": "{0} gün",
+        "week": "bir həftə",
+        "weeks": "{0} həftə",
         "month": "bir ay",
         "months": "{0} ay",
-        "year": "il",
+        "year": "bir il",
         "years": "{0} il",
     }
 
@@ -3370,15 +3378,15 @@ class HebrewLocale(Locale):
         "minute": "דקה",
         "minutes": "{0} דקות",
         "hour": "שעה",
-        "hours": {"2": "שעתיים", "general": "{0} שעות"},
+        "hours": {"2": "שעתיים", "ten": "{0} שעות", "higher": "{0} שעות"},
         "day": "יום",
-        "days": {"2": "יומיים", "general": "{0} ימים"},
+        "days": {"2": "יומיים", "ten": "{0} ימים", "higher": "{0} יום"},
         "week": "שבוע",
-        "weeks": {"2": "שבועיים", "general": "{0} שבועות"},
+        "weeks": {"2": "שבועיים", "ten": "{0} שבועות", "higher": "{0} שבועות"},
         "month": "חודש",
-        "months": {"2": "חודשיים", "general": "{0} חודשים"},
+        "months": {"2": "חודשיים", "ten": "{0} חודשים", "higher": "{0} חודשים"},
         "year": "שנה",
-        "years": {"2": "שנתיים", "general": "{0} שנים"},
+        "years": {"2": "שנתיים", "ten": "{0} שנים", "higher": "{0} שנה"},
     }
 
     meridians = {
@@ -3422,18 +3430,16 @@ class HebrewLocale(Locale):
     day_names = ["", "שני", "שלישי", "רביעי", "חמישי", "שישי", "שבת", "ראשון"]
     day_abbreviations = ["", "ב׳", "ג׳", "ד׳", "ה׳", "ו׳", "ש׳", "א׳"]
 
-    def _format_timeframe(
-        self, timeframe: TimeFrameLiteral, delta: Union[float, int]
-    ) -> str:
-        """Hebrew couple of <timeframe> aware"""
+    def _format_timeframe(self, timeframe: TimeFrameLiteral, delta: int) -> str:
         form = self.timeframes[timeframe]
-        delta = abs(trunc(delta))
-
+        delta = abs(delta)
         if isinstance(form, Mapping):
             if delta == 2:
                 form = form["2"]
+            elif delta == 0 or 2 < delta <= 10:
+                form = form["ten"]
             else:
-                form = form["general"]
+                form = form["higher"]
 
         return form.format(delta)
 
@@ -5213,13 +5219,13 @@ class SerbianLocale(Locale):
 
     month_names = [
         "",
-        "januar",  # Јануар
+        "januar",  # јануар
         "februar",  # фебруар
         "mart",  # март
         "april",  # април
         "maj",  # мај
-        "juni",  # јун
-        "juli",  # јул
+        "jun",  # јун
+        "jul",  # јул
         "avgust",  # август
         "septembar",  # септембар
         "oktobar",  # октобар
@@ -5229,18 +5235,18 @@ class SerbianLocale(Locale):
 
     month_abbreviations = [
         "",
-        "jan.",
-        "febr.",
-        "mart",
-        "april",
+        "jan",
+        "feb",
+        "mar",
+        "apr",
         "maj",
-        "juni",
-        "juli",
-        "avg.",
-        "sept.",
-        "okt.",
-        "nov.",
-        "dec.",
+        "jun",
+        "jul",
+        "avg",
+        "sep",
+        "okt",
+        "nov",
+        "dec",
     ]
 
     day_names = [
@@ -5644,3 +5650,248 @@ class AlbanianLocale(Locale):
         "sht",
         "die",
     ]
+
+
+class SinhalaLocale(Locale):
+
+    names = ["si", "si-lk"]
+
+    past = "{0}ට පෙර"
+    future = "{0}"
+    and_word = "සහ"
+
+    timeframes: ClassVar[Mapping[TimeFrameLiteral, Union[Mapping[str, str], str]]] = {
+        "now": "දැන්",
+        "second": {
+            "past": "තත්පරයක",
+            "future": "තත්පරයකින්",
+        },  # ක් is the article
+        "seconds": {
+            "past": "තත්පර {0} ක",
+            "future": "තත්පර {0} කින්",
+        },
+        "minute": {
+            "past": "විනාඩියක",
+            "future": "විනාඩියකින්",
+        },
+        "minutes": {
+            "past": "විනාඩි {0} ක",
+            "future": "මිනිත්තු {0} කින්",
+        },
+        "hour": {"past": "පැයක", "future": "පැයකින්"},
+        "hours": {
+            "past": "පැය {0} ක",
+            "future": "පැය {0} කින්",
+        },
+        "day": {"past": "දිනක", "future": "දිනකට"},
+        "days": {
+            "past": "දින {0} ක",
+            "future": "දින {0} කින්",
+        },
+        "week": {"past": "සතියක", "future": "සතියකින්"},
+        "weeks": {
+            "past": "සති {0} ක",
+            "future": "සති {0} කින්",
+        },
+        "month": {"past": "මාසයක", "future": "එය මාසය තුළ"},
+        "months": {
+            "past": "මාස {0} ක",
+            "future": "මාස {0} කින්",
+        },
+        "year": {"past": "වසරක", "future": "වසරක් තුළ"},
+        "years": {
+            "past": "අවුරුදු {0} ක",
+            "future": "අවුරුදු {0} තුළ",
+        },
+    }
+    # Sinhala: the general format to describe timeframe is different from past and future,
+    # so we do not copy the original timeframes dictionary
+    timeframes_only_distance = dict()
+    timeframes_only_distance["second"] = "තත්පරයක්"
+    timeframes_only_distance["seconds"] = "තත්පර {0}"
+    timeframes_only_distance["minute"] = "මිනිත්තුවක්"
+    timeframes_only_distance["minutes"] = "විනාඩි {0}"
+    timeframes_only_distance["hour"] = "පැයක්"
+    timeframes_only_distance["hours"] = "පැය {0}"
+    timeframes_only_distance["day"] = "දවසක්"
+    timeframes_only_distance["days"] = "දවස් {0}"
+    timeframes_only_distance["week"] = "සතියක්"
+    timeframes_only_distance["weeks"] = "සති {0}"
+    timeframes_only_distance["month"] = "මාසයක්"
+    timeframes_only_distance["months"] = "මාස {0}"
+    timeframes_only_distance["year"] = "අවුරුද්දක්"
+    timeframes_only_distance["years"] = "අවුරුදු {0}"
+
+    def _format_timeframe(self, timeframe: TimeFrameLiteral, delta: int) -> str:
+        """
+        Sinhala awares time frame format function, takes into account
+        the differences between general, past, and future forms (three different suffixes).
+        """
+        abs_delta = abs(delta)
+        form = self.timeframes[timeframe]
+
+        if isinstance(form, str):
+            return form.format(abs_delta)
+
+        if delta > 0:
+            key = "future"
+        else:
+            key = "past"
+        form = form[key]
+
+        return form.format(abs_delta)
+
+    def describe(
+        self,
+        timeframe: TimeFrameLiteral,
+        delta: Union[float, int] = 1,  # key is always future when only_distance=False
+        only_distance: bool = False,
+    ) -> str:
+        """Describes a delta within a timeframe in plain language.
+
+        :param timeframe: a string representing a timeframe.
+        :param delta: a quantity representing a delta in a timeframe.
+        :param only_distance: return only distance eg: "11 seconds" without "in" or "ago" keywords
+        """
+
+        if not only_distance:
+            return super().describe(timeframe, delta, only_distance)
+        # Sinhala uses a different case without 'in' or 'ago'
+        humanized = self.timeframes_only_distance[timeframe].format(trunc(abs(delta)))
+
+        return humanized
+
+    month_names = [
+        "",
+        "ජනවාරි",
+        "පෙබරවාරි",
+        "මාර්තු",
+        "අප්‍රේල්",
+        "මැයි",
+        "ජූනි",
+        "ජූලි",
+        "අගෝස්තු",
+        "සැප්තැම්බර්",
+        "ඔක්තෝබර්",
+        "නොවැම්බර්",
+        "දෙසැම්බර්",
+    ]
+
+    month_abbreviations = [
+        "",
+        "ජන",
+        "පෙබ",
+        "මාර්",
+        "අප්‍රේ",
+        "මැයි",
+        "ජුනි",
+        "ජූලි",
+        "අගෝ",
+        "සැප්",
+        "ඔක්",
+        "නොවැ",
+        "දෙසැ",
+    ]
+
+    day_names = [
+        "",
+        "සදුදා",
+        "අඟහරැවදා",
+        "බදාදා",
+        "බ්‍රහස්‍පතින්‍දා",
+        "සිකුරාදා",
+        "සෙනසුරාදා",
+        "ඉරිදා",
+    ]
+
+    day_abbreviations = [
+        "",
+        "සදුද",
+        "බදා",
+        "බදා",
+        "සිකු",
+        "සෙන",
+        "අ",
+        "ඉරිදා",
+    ]
+
+
+class UrduLocale(Locale):
+
+    names = ["ur", "ur-pk"]
+
+    past = "پہلے {0}"
+    future = "میں {0}"
+    and_word = "اور"
+
+    timeframes = {
+        "now": "ابھی",
+        "second": "ایک سیکنڈ",
+        "seconds": "{0} سیکنڈ",
+        "minute": "ایک منٹ",
+        "minutes": "{0} منٹ",
+        "hour": "ایک گھنٹے",
+        "hours": "{0} گھنٹے",
+        "day": "ایک دن",
+        "days": "{0} دن",
+        "week": "ایک ہفتے",
+        "weeks": "{0} ہفتے",
+        "month": "ایک مہینہ",
+        "months": "{0} ماہ",
+        "year": "ایک سال",
+        "years": "{0} سال",
+    }
+
+    month_names = [
+        "",
+        "جنوری",
+        "فروری",
+        "مارچ",
+        "اپریل",
+        "مئی",
+        "جون",
+        "جولائی",
+        "اگست",
+        "ستمبر",
+        "اکتوبر",
+        "نومبر",
+        "دسمبر",
+    ]
+
+    month_abbreviations = [
+        "",
+        "جنوری",
+        "فروری",
+        "مارچ",
+        "اپریل",
+        "مئی",
+        "جون",
+        "جولائی",
+        "اگست",
+        "ستمبر",
+        "اکتوبر",
+        "نومبر",
+        "دسمبر",
+    ]
+
+    day_names = [
+        "",
+        "سوموار",
+        "منگل",
+        "بدھ",
+        "جمعرات",
+        "جمعہ",
+        "ہفتہ",
+        "اتوار",
+    ]
+
+    day_abbreviations = [
+        "",
+        "سوموار",
+        "منگل",
+        "بدھ",
+        "جمعرات",
+        "جمعہ",
+        "ہفتہ",
+        "اتوار",
+    ]