diff --git a/hotbit/reverseApi.py b/hotbit/reverseApi.py
index a4334f0..01198a3 100644
--- a/hotbit/reverseApi.py
+++ b/hotbit/reverseApi.py
@@ -1,12 +1,38 @@
 import requests
 import requestsWS
 from decimal import *
+from datetime import datetime
+import time
+
+DT_FORMAT = "%d/%m/%Y %H:%M:%S"
 
 def round_down(value, decimals): # https://stackoverflow.com/questions/41383787/round-down-to-2-decimal-in-python
     with localcontext() as ctx:
         ctx.rounding = ROUND_DOWN
         return round(value, decimals)
 
+def check_date_format(date_str):
+    try:
+        datetime.strptime(date_str, DT_FORMAT)
+    except ValueError:
+        print("This is the incorrect date string format. It should be DD-MM-YYYY")
+        return False
+    else:
+        return True
+    
+def date_str_to_timestamp(date_str=None):
+    if isinstance(date_str, str):
+        print("date : ", date_str)
+        is_valid = check_date_format(date_str)
+        timestamp = time.mktime(
+                datetime.strptime(date_str, DT_FORMAT).timetuple()
+            )
+
+        return {
+            "is_valid": is_valid,
+            "timestamp": timestamp
+        }
+
 class Hotbit:
     def __init__(self, auth):
         self.session = requests.Session()
@@ -181,7 +207,50 @@ def order(self, price, amount, market, side, type="LIMIT", hide=False, use_disco
         }
         resp = self.session.post("https://www.hotbit.pro/v1/order/create?platform=web", headers=self.defaultHeaders, data=payload)
         return resp.json()
+    
+    def klineQuery(self, market, start, end, interval=60):
+        market = market.replace("/", "")
+        time_start_dict = date_str_to_timestamp(start)
+        time_end_dict = date_str_to_timestamp(end)
 
+        timestamp_start = int(time_start_dict.get("timestamp"))
+        timestamp_end = int(time_end_dict.get("timestamp"))
+
+        payload = {
+            "method": "kline.query",
+            "params": [
+                market,
+                timestamp_start,
+                timestamp_end,
+                interval
+            ],
+            "id": 100
+        }
+
+        resp = self.sessionWS.post(
+            'wss://ws.hotbit.io/',
+            json=payload,
+            encryption="gzip",
+            identifiers={"id": 100}
+        )
+        return resp.json()
+        
+    def priceQuery(self, market):
+        market = market.replace("/", "")
+
+        payload = {
+            "method":"price.query",
+            "params":[market],
+            "id":100
+        }
+
+        resp = self.sessionWS.post(
+            'wss://ws.hotbit.io/',
+            json=payload,
+            encryption="gzip",
+            identifiers={"id": 100}
+        )
+        return resp.json()
 
     def customWS(self, whatToSend):
         resp = self.sessionWS.post('wss://ws.hotbit.io/', json=whatToSend, encryption="gzip").text
@@ -189,4 +258,4 @@ def customWS(self, whatToSend):
 
     def customHTTP(self, url, whatToSend):
         resp = self.session.post(url, json=whatToSend).text
-        return resp
\ No newline at end of file
+        return resp