diff --git a/telegram-history-analysis/telegram-history.py b/telegram-history-analysis/telegram-history.py
new file mode 100644
index 0000000..bc059af
--- /dev/null
+++ b/telegram-history-analysis/telegram-history.py
@@ -0,0 +1,57 @@
+import json
+from datetime import datetime, timedelta
+
+import matplotlib.pyplot as plt
+import matplotlib.dates as mdates
+
+if __name__ == '__main__':
+    # file = "~/Downloads/Telegram Desktop/ChatExport_2021-11-02 (1)/result.json"
+    file = "./result-full.json"
+    # start = datetime(2021, 11, 1, 12, 1, 1)
+    # end = datetime(2021, 11, 2, 16, 1, 1)
+    start = '2021-06-25T12:01:01'
+    end = '2021-11-02T14:01:01'
+
+    with open(file, 'r') as f:
+        # lines = f.read().split('\n')
+        # startFound = False
+        # i = 0
+        # while True:
+        #     if not startFound:
+        #         if lines[0][3:11] == '"date": ' and lines[0][12:31] >= start:
+        #             startFound = True
+        #         else:
+        #             lines.pop(0)
+        #     if startFound:
+        #         if lines[i][3:11] == '"date": ' and lines[i][12:31] > end:
+        #             lines = lines[0:i]
+        #             break
+        #         else:
+        #             i += 1
+
+        obj = json.load(f)
+
+    messages: list = obj['messages']
+    messages = [m for m in messages if start < m['date'] < end
+                and m['type'] == 'message'
+                # and m['from'] == 'Shu Lin'
+                # and m['from'] == 'Hykilpikonna'
+                ]
+
+    timezone_delta = timedelta(hours=12)
+    dates = [datetime.fromisoformat(m['date']) - timezone_delta for m in messages]
+
+    # fig, ax = plt.subplots()
+    # ax.hist('date', data=dates)
+    #
+    # ax.xaxis.set_major_locator(mdates.HourLocator(interval=3))
+    # ax.xaxis.set_minor_locator(mdates.HourLocator())
+    # ax.xaxis.set_major_formatter(mdates.DateFormatter('%d %H'))
+
+    plt.xticks(rotation=90)
+    plt.tight_layout()
+    plt.hist(dates, bins=300, color='#ffcccc')
+    plt.show()
+
+
+