diff --git a/CHANGES b/CHANGES
index d2033ca085..1a15a85698 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,4 @@
+    * Fix timezone handling for datetime to unixtime conversions
     * Fix start_id type for XAUTOCLAIM
     * Remove verbose logging from cluster.py
     * Add retry mechanism to async version of Connection
diff --git a/redis/commands/core.py b/redis/commands/core.py
index 4243679626..6cf04577fc 100644
--- a/redis/commands/core.py
+++ b/redis/commands/core.py
@@ -2,7 +2,6 @@
 
 import datetime
 import hashlib
-import time
 import warnings
 from typing import (
     TYPE_CHECKING,
@@ -1674,7 +1673,7 @@ def expireat(
         For more information see https://redis.io/commands/expireat
         """
         if isinstance(when, datetime.datetime):
-            when = int(time.mktime(when.timetuple()))
+            when = int(when.timestamp())
 
         exp_option = list()
         if nx:
@@ -1769,14 +1768,12 @@ def getex(
         if exat is not None:
             pieces.append("EXAT")
             if isinstance(exat, datetime.datetime):
-                s = int(exat.microsecond / 1000000)
-                exat = int(time.mktime(exat.timetuple())) + s
+                exat = int(exat.timestamp())
             pieces.append(exat)
         if pxat is not None:
             pieces.append("PXAT")
             if isinstance(pxat, datetime.datetime):
-                ms = int(pxat.microsecond / 1000)
-                pxat = int(time.mktime(pxat.timetuple())) * 1000 + ms
+                pxat = int(pxat.timestamp() * 1000)
             pieces.append(pxat)
         if persist:
             pieces.append("PERSIST")
@@ -1995,8 +1992,7 @@ def pexpireat(
         For more information see https://redis.io/commands/pexpireat
         """
         if isinstance(when, datetime.datetime):
-            ms = int(when.microsecond / 1000)
-            when = int(time.mktime(when.timetuple())) * 1000 + ms
+            when = int(when.timestamp() * 1000)
         exp_option = list()
         if nx:
             exp_option.append("NX")
@@ -2197,14 +2193,12 @@ def set(
         if exat is not None:
             pieces.append("EXAT")
             if isinstance(exat, datetime.datetime):
-                s = int(exat.microsecond / 1000000)
-                exat = int(time.mktime(exat.timetuple())) + s
+                exat = int(exat.timestamp())
             pieces.append(exat)
         if pxat is not None:
             pieces.append("PXAT")
             if isinstance(pxat, datetime.datetime):
-                ms = int(pxat.microsecond / 1000)
-                pxat = int(time.mktime(pxat.timetuple())) * 1000 + ms
+                pxat = int(pxat.timestamp() * 1000)
             pieces.append(pxat)
         if keepttl:
             pieces.append("KEEPTTL")
diff --git a/tests/test_asyncio/test_commands.py b/tests/test_asyncio/test_commands.py
index eaae185f31..4c25277616 100644
--- a/tests/test_asyncio/test_commands.py
+++ b/tests/test_asyncio/test_commands.py
@@ -4,7 +4,6 @@
 import binascii
 import datetime
 import re
-import time
 from string import ascii_letters
 
 import pytest
@@ -750,7 +749,7 @@ async def test_expireat_no_key(self, r: redis.Redis):
     async def test_expireat_unixtime(self, r: redis.Redis):
         expire_at = await redis_server_time(r) + datetime.timedelta(minutes=1)
         await r.set("a", "foo")
-        expire_at_seconds = int(time.mktime(expire_at.timetuple()))
+        expire_at_seconds = int(expire_at.timestamp())
         assert await r.expireat("a", expire_at_seconds)
         assert 0 < await r.ttl("a") <= 61
 
@@ -875,8 +874,8 @@ async def test_pexpireat_no_key(self, r: redis.Redis):
     async def test_pexpireat_unixtime(self, r: redis.Redis):
         expire_at = await redis_server_time(r) + datetime.timedelta(minutes=1)
         await r.set("a", "foo")
-        expire_at_seconds = int(time.mktime(expire_at.timetuple())) * 1000
-        assert await r.pexpireat("a", expire_at_seconds)
+        expire_at_milliseconds = int(expire_at.timestamp() * 1000)
+        assert await r.pexpireat("a", expire_at_milliseconds)
         assert 0 < await r.pttl("a") <= 61000
 
     @skip_if_server_version_lt("2.6.0")
diff --git a/tests/test_commands.py b/tests/test_commands.py
index 715d18c951..f9134d858b 100644
--- a/tests/test_commands.py
+++ b/tests/test_commands.py
@@ -1185,7 +1185,7 @@ def test_expireat_no_key(self, r):
     def test_expireat_unixtime(self, r):
         expire_at = redis_server_time(r) + datetime.timedelta(minutes=1)
         r["a"] = "foo"
-        expire_at_seconds = int(time.mktime(expire_at.timetuple()))
+        expire_at_seconds = int(expire_at.timestamp())
         assert r.expireat("a", expire_at_seconds) is True
         assert 0 < r.ttl("a") <= 61
 
@@ -1428,8 +1428,8 @@ def test_pexpireat_no_key(self, r):
     def test_pexpireat_unixtime(self, r):
         expire_at = redis_server_time(r) + datetime.timedelta(minutes=1)
         r["a"] = "foo"
-        expire_at_seconds = int(time.mktime(expire_at.timetuple())) * 1000
-        assert r.pexpireat("a", expire_at_seconds) is True
+        expire_at_milliseconds = int(expire_at.timestamp() * 1000)
+        assert r.pexpireat("a", expire_at_milliseconds) is True
         assert 0 < r.pttl("a") <= 61000
 
     @skip_if_server_version_lt("7.0.0")