diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8e6e187..4848def 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@ Notable changes to this project are documented in this file. The format is based
 
 Breaking changes (😱!!!):
 - Added support for PureScript 0.14 and dropped support for all previous versions (#62, #64)
+- Added support for lower-case meridiem via a new `FormatterCommand` constructor `MeridiemLowerCase`
 
 New features:
 
diff --git a/README.md b/README.md
index ef8ca81..42b674f 100644
--- a/README.md
+++ b/README.md
@@ -50,26 +50,27 @@ then use formatter to result of division of input number and that power.
 
 This is a subset of common format/parse strings currently supported.
 
-+ `YYYY` - Full Year      (1999)
-+ `YY`   - 2 digit year   (99)
-+ `MMMM` - Full Month     (January)
-+ `MMM`  - Short Month    (Jan)
-+ `DD`   - Padded Day     (02)
-+ `D`    - Day of month   (2)
-+ `X`    - Unix Timestamp (1506875681)
-+ `E`    - Day of Week    (2)
-+ `dddd` - DOW Name       (Monday)
-+ `ddd`  - DOW Name Short (Mon)
-+ `HH`   - 24 Hour        (13)
-+ `hh`   - 12 Hour        (1)
-+ `a`    - Meridiem       (am/pm)
-+ `mm`   - Minutes Padded (02)
-+ `m`    - Minutes        (2)
-+ `ss`   - Seconds Padded (02)
-+ `s`    - Seconds        (2)
-+ `S`    - MilliSeconds   (4)
-+ `SS`   - MilliSeconds   (04)
-+ `SSS`  - MilliSeconds   (004)
++ `YYYY` - Full Year          (1999)
++ `YY`   - 2 digit year       (99)
++ `MMMM` - Full Month         (January)
++ `MMM`  - Short Month        (Jan)
++ `DD`   - Padded Day         (02)
++ `D`    - Day of month       (2)
++ `X`    - Unix Timestamp     (1506875681)
++ `E`    - Day of Week        (2)
++ `dddd` - DOW Name           (Monday)
++ `ddd`  - DOW Name Short     (Mon)
++ `HH`   - 24 Hour            (13)
++ `hh`   - 12 Hour            (1)
++ `a`    - Meridiem           (AM/PM)
++ `A`    - MeridiemLowerCase  (am/pm)
++ `mm`   - Minutes Padded     (02)
++ `m`    - Minutes            (2)
++ `ss`   - Seconds Padded     (02)
++ `s`    - Seconds            (2)
++ `S`    - MilliSeconds       (4)
++ `SS`   - MilliSeconds       (04)
++ `SSS`  - MilliSeconds       (004)
 
 Full list is defined [here](https://github.com/slamdata/purescript-formatters/blob/master/src/Data/Formatter/DateTime.purs)
 
diff --git a/src/Data/Formatter/DateTime.purs b/src/Data/Formatter/DateTime.purs
index a096a0b..927619b 100644
--- a/src/Data/Formatter/DateTime.purs
+++ b/src/Data/Formatter/DateTime.purs
@@ -63,6 +63,7 @@ data FormatterCommand
   | Hours24
   | Hours12
   | Meridiem
+  | MeridiemLowerCase
   | Minutes
   | MinutesTwoDigits
   | Seconds
@@ -97,6 +98,7 @@ printFormatterCommand = case _ of
   Hours24 → "HH"
   Hours12 → "hh"
   Meridiem → "a"
+  MeridiemLowerCase → "A"
   Minutes → "m"
   MinutesTwoDigits → "mm"
   Seconds → "s"
@@ -114,7 +116,7 @@ parseFormatString = runP formatParser
 
 placeholderContent ∷ P.Parser String String
 placeholderContent =
-  CU.toCharArray "YMDEHhamsS"
+  CU.toCharArray "YMDEHhaAmsS"
   # PS.noneOf
   # Array.some
   <#> CU.fromCharArray
@@ -136,6 +138,7 @@ formatterCommandParser = (PC.try <<< PS.string) `oneOfAs`
   , Tuple "HH" Hours24
   , Tuple "hh" Hours12
   , Tuple "a" Meridiem
+  , Tuple "A" MeridiemLowerCase
   , Tuple "mm" MinutesTwoDigits
   , Tuple "m" Minutes
   , Tuple "ss" SecondsTwoDigits
@@ -180,6 +183,7 @@ formatCommand dt@(DT.DateTime d t) = case _ of
   Hours24 → padSingleDigit (fromEnum $ T.hour t)
   Hours12 → padSingleDigit $ fix12 $ (fromEnum $ T.hour t) `mod` 12
   Meridiem → if (fromEnum $ T.hour t) >= 12 then "PM" else "AM"
+  MeridiemLowerCase → if (fromEnum $ T.hour t) >= 12 then "pm" else "am"
   Minutes → show $ fromEnum $ T.minute t
   MinutesTwoDigits → padSingleDigit <<< fromEnum $ T.minute t
   Seconds → show $ fromEnum $ T.second t
@@ -382,6 +386,7 @@ unformatCommandParser = case _ of
   Hours12 → _{hour = _} `modifyWithParser`
     (parseInt 2 (validateRange 0 12 <> exactLength) "Incorrect 12 hour")
   Meridiem → _{meridiem = _} `modifyWithParser` parseMeridiem
+  MeridiemLowerCase → _{meridiem = _} `modifyWithParser` parseMeridiem
   MinutesTwoDigits → _{minute = _} `modifyWithParser`
     (parseInt 2 (validateRange 0 59 <> exactLength) "Incorrect 2-digit minute")
   Minutes → _{minute = _} `modifyWithParser`
diff --git a/test/src/DateTime.purs b/test/src/DateTime.purs
index 643519a..f951f76 100644
--- a/test/src/DateTime.purs
+++ b/test/src/DateTime.purs
@@ -30,8 +30,11 @@ datetimeTest = describe "Data.Formatter.DateTime" do
     , { format: "YY", dateStr: "00" , date: makeDateTime 0 4 12 0 0 0 0} -- Format 0 with YY
     , { format: "YY", dateStr: "01" , date: makeDateTime (-1) 4 12 0 0 0 0} -- Format -1 with YY
     , { format: "hh:m:s a", dateStr: "11:3:4 AM", date: makeDateTime 2017 4 12 11 3 4 234 }
+    , { format: "hh:m:s A", dateStr: "11:3:4 am", date: makeDateTime 2017 4 12 11 3 4 234 }
     , { format: "hh a", dateStr: "12 AM", date: makeDateTime 0 1 1 0 0 0 0 }
     , { format: "hh a", dateStr: "12 PM", date: makeDateTime 0 1 1 12 0 0 0 }
+    , { format: "hh A", dateStr: "12 am", date: makeDateTime 0 1 1 0 0 0 0 }
+    , { format: "hh A", dateStr: "12 pm", date: makeDateTime 0 1 1 12 0 0 0 }
     , { format: "hh:mm:ss a", dateStr: "11:03:04 AM", date: makeDateTime 2017 4 12 11 3 4 234 }
     , { format: "hh:mm:ss.SSS", dateStr: "11:12:30.123", date: makeDateTime 2017 4 10 11 12 30 123 }
     , { format: "hh:mm:ss.SSS", dateStr: "11:12:30.023", date: makeDateTime 2017 4 10 11 12 30 23 }
@@ -138,6 +141,24 @@ dateformats =
       , FDT.DayOfMonthTwoDigits
       ]
     }
+  , { str: "HH:mma"
+    , lossless: false
+    , format: fromFoldable
+      [ FDT.Hours24
+      , FDT.Placeholder ":"
+      , FDT.MinutesTwoDigits
+      , FDT.Meridiem
+      ]
+    }
+  , { str: "HH:mmA"
+    , lossless: false
+    , format: fromFoldable
+      [ FDT.Hours24
+      , FDT.Placeholder ":"
+      , FDT.MinutesTwoDigits
+      , FDT.MeridiemLowerCase
+      ]
+    }
   , { str: "Y-MM-DD HH:mm:ss:SSS"
     , lossless: true
     , format: fromFoldable