diff --git a/pyrogram/api/core/future_salt.py b/pyrogram/api/core/future_salt.py
index 4ee8197b..c4ccea3d 100644
--- a/pyrogram/api/core/future_salt.py
+++ b/pyrogram/api/core/future_salt.py
@@ -16,7 +16,6 @@
 # You should have received a copy of the GNU Lesser General Public License
 # along with Pyrogram.  If not, see <http://www.gnu.org/licenses/>.
 
-from datetime import datetime
 from io import BytesIO
 
 from .object import Object
@@ -30,15 +29,15 @@ class FutureSalt(Object):
 
     QUALNAME = "FutureSalt"
 
-    def __init__(self, valid_since: int or datetime, valid_until: int or datetime, salt: int):
+    def __init__(self, valid_since: int, valid_until: int, salt: int):
         self.valid_since = valid_since
         self.valid_until = valid_until
         self.salt = salt
 
     @staticmethod
     def read(b: BytesIO, *args) -> "FutureSalt":
-        valid_since = datetime.fromtimestamp(Int.read(b))
-        valid_until = datetime.fromtimestamp(Int.read(b))
+        valid_since = Int.read(b)
+        valid_until = Int.read(b)
         salt = Long.read(b)
 
         return FutureSalt(valid_since, valid_until, salt)
diff --git a/pyrogram/api/core/future_salts.py b/pyrogram/api/core/future_salts.py
index cf6a9902..91ee7b51 100644
--- a/pyrogram/api/core/future_salts.py
+++ b/pyrogram/api/core/future_salts.py
@@ -16,7 +16,6 @@
 # You should have received a copy of the GNU Lesser General Public License
 # along with Pyrogram.  If not, see <http://www.gnu.org/licenses/>.
 
-from datetime import datetime
 from io import BytesIO
 
 from . import FutureSalt
@@ -31,7 +30,7 @@ class FutureSalts(Object):
 
     QUALNAME = "FutureSalts"
 
-    def __init__(self, req_msg_id: int, now: int or datetime, salts: list):
+    def __init__(self, req_msg_id: int, now: int, salts: list):
         self.req_msg_id = req_msg_id
         self.now = now
         self.salts = salts
@@ -39,7 +38,7 @@ class FutureSalts(Object):
     @staticmethod
     def read(b: BytesIO, *args) -> "FutureSalts":
         req_msg_id = Long.read(b)
-        now = datetime.fromtimestamp(Int.read(b))
+        now = Int.read(b)
 
         count = Int.read(b)
         salts = [FutureSalt.read(b) for _ in range(count)]
diff --git a/pyrogram/session/session.py b/pyrogram/session/session.py
index 66207037..e4260be4 100644
--- a/pyrogram/session/session.py
+++ b/pyrogram/session/session.py
@@ -350,7 +350,8 @@ class Session:
 
             # Seconds to wait until middle-overlap, which is
             # 15 minutes before/after the current/next salt end/start time
-            dt = (self.current_salt.valid_until - now).total_seconds() - 900
+            valid_until = datetime.fromtimestamp(self.current_salt.valid_until)
+            dt = (valid_until - now).total_seconds() - 900
 
             log.debug("Current salt: {} | Next salt in {:.0f}m {:.0f}s ({})".format(
                 self.current_salt.salt,