diff --git a/CHANGELOG b/CHANGELOG
index f1e6a760..7353e840 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -14,6 +14,7 @@ jc changelog
 - Update stat parser to add access_time_epoch, access_time_epoch_utc, modify_time_epoch, modify_time_epoch_utc,
       change_time_epoch, change_time_epoch_utc, birth_time_epoch, birth_time_epoch_utc fields
 - Update timedatectl parser to add epoch_utc field
+- Update who parser to add epoch field
 - Add -h option to display the help text. Piping errors no longer show the help text.
 - Add -v option to display version information.
 - Make all external python library dependencies optional: pygments, ruamel.yaml, xmltodict
diff --git a/EXAMPLES.md b/EXAMPLES.md
index fad038c4..a1d2c8f5 100644
--- a/EXAMPLES.md
+++ b/EXAMPLES.md
@@ -2950,13 +2950,15 @@ who | jc --who -p          # or:  jc -p who
   {
     "user": "joeuser",
     "tty": "ttyS0",
-    "time": "2020-03-02 02:52"
+    "time": "2020-03-02 02:52",
+    "epoch": 1583146320
   },
   {
     "user": "joeuser",
     "tty": "pts/0",
     "time": "2020-03-02 05:15",
-    "from": "192.168.71.1"
+    "from": "192.168.71.1",
+    "epoch": 1583154900
   }
 ]
 ```
@@ -2968,32 +2970,8 @@ who -a | jc --who -p          # or:  jc -p who -a
   {
     "event": "reboot",
     "time": "Feb 7 23:31",
-    "pid": 1
-  },
-  {
-    "user": "joeuser",
-    "writeable_tty": "-",
-    "tty": "console",
-    "time": "Feb 7 23:32",
-    "idle": "old",
-    "pid": 105
-  },
-  {
-    "user": "joeuser",
-    "writeable_tty": "+",
-    "tty": "ttys000",
-    "time": "Feb 13 16:44",
-    "idle": ".",
-    "pid": 51217,
-    "comment": "term=0 exit=0"
-  },
-  {
-    "user": "joeuser",
-    "writeable_tty": "?",
-    "tty": "ttys003",
-    "time": "Feb 28 08:59",
-    "idle": "01:36",
-    "pid": 41402
+    "pid": 1,
+    "epoch": null
   },
   {
     "user": "joeuser",
@@ -3002,7 +2980,8 @@ who -a | jc --who -p          # or:  jc -p who -a
     "time": "Mar 1 16:35",
     "idle": ".",
     "pid": 15679,
-    "from": "192.168.1.5"
+    "from": "192.168.1.5",
+    "epoch": null
   }
 ]
 ```
diff --git a/docs/parsers/who.md b/docs/parsers/who.md
index 245a62a4..0dfe152c 100644
--- a/docs/parsers/who.md
+++ b/docs/parsers/who.md
@@ -4,6 +4,8 @@ jc - JSON CLI output utility `who` command output parser
 
 Accepts any of the following who options (or no options): `-aTH`
 
+The `epoch` calculated timestamp field is naive (i.e. based on the local time of the system the parser is run on)
+
 Usage (cli):
 
     $ who | jc --who
@@ -28,7 +30,8 @@ Examples:
       {
         "event": "reboot",
         "time": "Feb 7 23:31",
-        "pid": 1
+        "pid": 1,
+        "epoch": null
       },
       {
         "user": "joeuser",
@@ -36,7 +39,8 @@ Examples:
         "tty": "console",
         "time": "Feb 7 23:32",
         "idle": "old",
-        "pid": 105
+        "pid": 105,
+        "epoch": null
       },
       {
         "user": "joeuser",
@@ -45,7 +49,8 @@ Examples:
         "time": "Feb 13 16:44",
         "idle": ".",
         "pid": 51217,
-        "comment": "term=0 exit=0"
+        "comment": "term=0 exit=0",
+        "epoch": null
       },
       {
         "user": "joeuser",
@@ -53,7 +58,8 @@ Examples:
         "tty": "ttys003",
         "time": "Feb 28 08:59",
         "idle": "01:36",
-        "pid": 41402
+        "pid": 41402,
+        "epoch": null
       },
       {
         "user": "joeuser",
@@ -62,7 +68,8 @@ Examples:
         "time": "Mar 1 16:35",
         "idle": ".",
         "pid": 15679,
-        "from": "192.168.1.5"
+        "from": "192.168.1.5",
+        "epoch": null
       }
     ]
 
@@ -138,6 +145,7 @@ Returns:
         "writeable_tty":   string,
         "tty":             string,
         "time":            string,
+        "epoch":           integer,     # naive timestamp. null if time cannot be converted
         "idle":            string,
         "pid":             integer,
         "from":            string,
diff --git a/jc/parsers/who.py b/jc/parsers/who.py
index a91da148..9d65dc98 100644
--- a/jc/parsers/who.py
+++ b/jc/parsers/who.py
@@ -2,6 +2,8 @@
 
 Accepts any of the following who options (or no options): `-aTH`
 
+The `epoch` calculated timestamp field is naive (i.e. based on the local time of the system the parser is run on)
+
 Usage (cli):
 
     $ who | jc --who
@@ -26,7 +28,8 @@ Examples:
       {
         "event": "reboot",
         "time": "Feb 7 23:31",
-        "pid": 1
+        "pid": 1,
+        "epoch": null
       },
       {
         "user": "joeuser",
@@ -34,7 +37,8 @@ Examples:
         "tty": "console",
         "time": "Feb 7 23:32",
         "idle": "old",
-        "pid": 105
+        "pid": 105,
+        "epoch": null
       },
       {
         "user": "joeuser",
@@ -43,7 +47,8 @@ Examples:
         "time": "Feb 13 16:44",
         "idle": ".",
         "pid": 51217,
-        "comment": "term=0 exit=0"
+        "comment": "term=0 exit=0",
+        "epoch": null
       },
       {
         "user": "joeuser",
@@ -51,7 +56,8 @@ Examples:
         "tty": "ttys003",
         "time": "Feb 28 08:59",
         "idle": "01:36",
-        "pid": 41402
+        "pid": 41402,
+        "epoch": null
       },
       {
         "user": "joeuser",
@@ -60,7 +66,8 @@ Examples:
         "time": "Mar 1 16:35",
         "idle": ".",
         "pid": 15679,
-        "from": "192.168.1.5"
+        "from": "192.168.1.5",
+        "epoch": null
       }
     ]
 
@@ -112,7 +119,7 @@ import jc.utils
 
 
 class info():
-    version = '1.1'
+    version = '1.2'
     description = 'who command parser'
     author = 'Kelly Brazil'
     author_email = 'kellyjonbrazil@gmail.com'
@@ -145,6 +152,7 @@ def process(proc_data):
             "writeable_tty":   string,
             "tty":             string,
             "time":            string,
+            "epoch":           integer,     # naive timestamp. null if time cannot be converted
             "idle":            string,
             "pid":             integer,
             "from":            string,
@@ -162,6 +170,9 @@ def process(proc_data):
                 except (ValueError):
                     entry[key] = None
 
+        if 'time' in entry:
+            entry['epoch'] = jc.utils.parse_datetime_to_timestamp(entry['time'])['timestamp_naive']
+
     return proc_data
 
 
diff --git a/jc/utils.py b/jc/utils.py
index 570ec3cf..f584e277 100644
--- a/jc/utils.py
+++ b/jc/utils.py
@@ -135,6 +135,7 @@ def parse_datetime_to_timestamp(data):
 
     formats = [
         {'id': 1000, 'format': '%a %b %d %H:%M:%S %Y', 'locale': None},  # manual C locale format conversion: Tue Mar 23 16:12:11 2021 or Tue Mar 23 16:12:11 IST 2021
+        {'id': 1500, 'format': '%Y-%m-%d %H:%M', 'locale': None},  # en_US.UTF-8 local format (found in who cli output): 2021-03-23 00:14
         {'id': 2000, 'format': '%a %d %b %Y %I:%M:%S %p %Z', 'locale': None},  # en_US.UTF-8 local format (found in upower cli output): Tue 23 Mar 2021 04:12:11 PM UTC
         {'id': 3000, 'format': '%a %d %b %Y %I:%M:%S %p', 'locale': None},  # en_US.UTF-8 local format with non-UTC tz (found in upower cli output): Tue 23 Mar 2021 04:12:11 PM IST
         {'id': 4000, 'format': '%A %d %B %Y %I:%M:%S %p %Z', 'locale': None},  # European-style local format (found in upower cli output): Tuesday 01 October 2019 12:50:41 PM UTC
diff --git a/tests/fixtures/centos-7.7/who-a.json b/tests/fixtures/centos-7.7/who-a.json
index d691e692..e8a039a9 100644
--- a/tests/fixtures/centos-7.7/who-a.json
+++ b/tests/fixtures/centos-7.7/who-a.json
@@ -1 +1 @@
-[{"event": "reboot", "time": "2020-02-29 12:13"}, {"event": "login", "tty": "tty1", "time": "2020-02-29 12:13", "pid": 841, "comment": "id=tty1"}, {"user": "kbrazil", "writeable_tty": "+", "tty": "ttyS0", "time": "2020-02-29 12:14", "idle": ".", "pid": 840}, {"event": "run-level 3", "time": "2020-02-29 12:13"}, {"user": "kbrazil", "writeable_tty": "+", "tty": "pts/0", "time": "2020-02-29 18:43", "idle": "00:11", "pid": 3709, "from": "192.168.71.1"}, {"tty": "pts/1", "time": "2020-02-29 18:28", "pid": 3381, "comment": "id=ts/1 term=0 exit=0"}]
+[{"event":"reboot","time":"2020-02-29 12:13","epoch":1583007180},{"event":"login","tty":"tty1","time":"2020-02-29 12:13","pid":841,"comment":"id=tty1","epoch":1583007180},{"user":"kbrazil","writeable_tty":"+","tty":"ttyS0","time":"2020-02-29 12:14","idle":".","pid":840,"epoch":1583007240},{"event":"run-level 3","time":"2020-02-29 12:13","epoch":1583007180},{"user":"kbrazil","writeable_tty":"+","tty":"pts/0","time":"2020-02-29 18:43","idle":"00:11","pid":3709,"from":"192.168.71.1","epoch":1583030580},{"tty":"pts/1","time":"2020-02-29 18:28","pid":3381,"comment":"id=ts/1 term=0 exit=0","epoch":1583029680}]
diff --git a/tests/fixtures/centos-7.7/who.json b/tests/fixtures/centos-7.7/who.json
index 30f57713..16e34fd8 100644
--- a/tests/fixtures/centos-7.7/who.json
+++ b/tests/fixtures/centos-7.7/who.json
@@ -1 +1 @@
-[{"user": "kbrazil", "tty": "ttyS0", "time": "2020-02-29 12:14"}, {"user": "kbrazil", "tty": "pts/0", "time": "2020-02-29 18:43", "from": "192.168.71.1"}]
+[{"user":"kbrazil","tty":"ttyS0","time":"2020-02-29 12:14","epoch":1583007240},{"user":"kbrazil","tty":"pts/0","time":"2020-02-29 18:43","from":"192.168.71.1","epoch":1583030580}]
diff --git a/tests/fixtures/osx-10.14.6/who-a.json b/tests/fixtures/osx-10.14.6/who-a.json
index d43d5a6c..61b5008a 100644
--- a/tests/fixtures/osx-10.14.6/who-a.json
+++ b/tests/fixtures/osx-10.14.6/who-a.json
@@ -1 +1 @@
-[{"event": "reboot", "time": "Feb 7 23:31", "pid": 1}, {"user": "kbrazil", "tty": "console", "time": "Feb 7 23:32", "idle": "old", "pid": 105}, {"user": "kbrazil", "tty": "ttys000", "time": "Feb 13 16:44", "idle": "00:02", "pid": 51217, "comment": "term=0 exit=0"}, {"user": "kbrazil", "tty": "ttys001", "time": "Feb 11 21:25", "idle": "00:02", "pid": 81390}, {"user": "kbrazil", "tty": "ttys002", "time": "Mar 1 15:18", "idle": ".", "pid": 9574}, {"user": "kbrazil", "tty": "ttys003", "time": "Feb 28 08:59", "idle": "01:06", "pid": 41402}, {"user": "kbrazil", "tty": "ttys004", "time": "Mar 1 17:11", "idle": ".", "pid": 15679, "comment": "term=0 exit=0"}]
+[{"event":"reboot","time":"Feb 7 23:31","pid":1,"epoch":null},{"user":"kbrazil","tty":"console","time":"Feb 7 23:32","idle":"old","pid":105,"epoch":null},{"user":"kbrazil","tty":"ttys000","time":"Feb 13 16:44","idle":"00:02","pid":51217,"comment":"term=0 exit=0","epoch":null},{"user":"kbrazil","tty":"ttys001","time":"Feb 11 21:25","idle":"00:02","pid":81390,"epoch":null},{"user":"kbrazil","tty":"ttys002","time":"Mar 1 15:18","idle":".","pid":9574,"epoch":null},{"user":"kbrazil","tty":"ttys003","time":"Feb 28 08:59","idle":"01:06","pid":41402,"epoch":null},{"user":"kbrazil","tty":"ttys004","time":"Mar 1 17:11","idle":".","pid":15679,"comment":"term=0 exit=0","epoch":null}]
diff --git a/tests/fixtures/osx-10.14.6/who.json b/tests/fixtures/osx-10.14.6/who.json
index 2ffaee92..867e787a 100644
--- a/tests/fixtures/osx-10.14.6/who.json
+++ b/tests/fixtures/osx-10.14.6/who.json
@@ -1 +1 @@
-[{"user": "kbrazil", "tty": "console", "time": "Feb 7 23:32"}, {"user": "kbrazil", "tty": "ttys001", "time": "Feb 11 21:25"}, {"user": "kbrazil", "tty": "ttys002", "time": "Mar 1 15:18"}, {"user": "kbrazil", "tty": "ttys003", "time": "Feb 28 08:59"}]
+[{"user":"kbrazil","tty":"console","time":"Feb 7 23:32","epoch":null},{"user":"kbrazil","tty":"ttys001","time":"Feb 11 21:25","epoch":null},{"user":"kbrazil","tty":"ttys002","time":"Mar 1 15:18","epoch":null},{"user":"kbrazil","tty":"ttys003","time":"Feb 28 08:59","epoch":null}]
diff --git a/tests/fixtures/ubuntu-18.04/who-a.json b/tests/fixtures/ubuntu-18.04/who-a.json
index 714a8460..4979e8e6 100644
--- a/tests/fixtures/ubuntu-18.04/who-a.json
+++ b/tests/fixtures/ubuntu-18.04/who-a.json
@@ -1 +1 @@
-[{"event": "reboot", "time": "2020-03-02 02:52"}, {"user": "kbrazil", "writeable_tty": "-", "tty": "ttyS0", "time": "2020-03-02 02:52", "idle": ".", "pid": 1983}, {"event": "run-level 5", "time": "2020-03-02 02:52"}, {"event": "login", "tty": "tty1", "time": "2020-03-02 02:52", "pid": 1199, "comment": "id=tty1"}, {"user": "kbrazil", "writeable_tty": "+", "tty": "pts/0", "time": "2020-03-02 02:54", "idle": ".", "pid": 2176, "from": "192.168.71.1"}]
+[{"event":"reboot","time":"2020-03-02 02:52","epoch":1583146320},{"user":"kbrazil","writeable_tty":"-","tty":"ttyS0","time":"2020-03-02 02:52","idle":".","pid":1983,"epoch":1583146320},{"event":"run-level 5","time":"2020-03-02 02:52","epoch":1583146320},{"event":"login","tty":"tty1","time":"2020-03-02 02:52","pid":1199,"comment":"id=tty1","epoch":1583146320},{"user":"kbrazil","writeable_tty":"+","tty":"pts/0","time":"2020-03-02 02:54","idle":".","pid":2176,"from":"192.168.71.1","epoch":1583146440}]
diff --git a/tests/fixtures/ubuntu-18.04/who.json b/tests/fixtures/ubuntu-18.04/who.json
index 060b909d..41b0585f 100644
--- a/tests/fixtures/ubuntu-18.04/who.json
+++ b/tests/fixtures/ubuntu-18.04/who.json
@@ -1 +1 @@
-[{"user": "kbrazil", "tty": "ttyS0", "time": "2020-03-02 02:52"}, {"user": "kbrazil", "tty": "pts/0", "time": "2020-03-02 02:54", "from": "192.168.71.1"}]
+[{"user":"kbrazil","tty":"ttyS0","time":"2020-03-02 02:52","epoch":1583146320},{"user":"kbrazil","tty":"pts/0","time":"2020-03-02 02:54","from":"192.168.71.1","epoch":1583146440}]
diff --git a/tests/test_utils.py b/tests/test_utils.py
index 342e7da8..f8a7e4b2 100644
--- a/tests/test_utils.py
+++ b/tests/test_utils.py
@@ -10,6 +10,8 @@ class MyTests(unittest.TestCase):
             # C locale format conversion, or date cli command in C locale with non-UTC tz
             'Tue Mar 23 16:12:11 2021': {'format': 1000, 'timestamp_naive': 1616541131, 'timestamp_utc': None},
             'Tue Mar 23 16:12:11 IST 2021': {'format': 1000, 'timestamp_naive': 1616541131, 'timestamp_utc': None},
+            # en_US.UTF-8 local format (found in who cli output)
+            '2021-03-23 00:14': {'format': 1500, 'timestamp_naive': 1616483640, 'timestamp_utc': None},
             # en_US.UTF-8 local format (found in upower cli output)
             'Tue 23 Mar 2021 04:12:11 PM UTC': {'format': 2000, 'timestamp_naive': 1616541131, 'timestamp_utc': 1616515931},
             # en_US.UTF-8 local format with non-UTC tz (found in upower cli output)