diff --git a/anki/collection.py b/anki/collection.py
index 1c6376af7..2dd413444 100644
--- a/anki/collection.py
+++ b/anki/collection.py
@@ -81,7 +81,11 @@ class _Collection:
     backend: Backend
 
     def __init__(
-        self, db: DB, backend: Backend, server: bool = False, log: bool = False
+        self,
+        db: DB,
+        backend: Backend,
+        server: Optional["anki.storage.ServerData"] = None,
+        log: bool = False,
     ) -> None:
         self.backend = backend
         self._debugLog = log
@@ -92,7 +96,7 @@ class _Collection:
         self.server = server
         self._lastSave = time.time()
         self.clearUndo()
-        self.media = MediaManager(self, server)
+        self.media = MediaManager(self, server is not None)
         self.models = ModelManager(self)
         self.decks = DeckManager(self)
         self.tags = TagManager(self)
@@ -132,6 +136,8 @@ class _Collection:
             self.sched = V2Scheduler(self)
             if not self.server:
                 self.conf["localOffset"] = self.sched.timezoneOffset()
+            elif self.server.minutes_west is not None:
+                self.conf["localOffset"] = self.server.minutes_west
 
     def changeSchedulerVer(self, ver: int) -> None:
         if ver == self.schedVer():
diff --git a/anki/storage.py b/anki/storage.py
index 259661897..1012cf6af 100644
--- a/anki/storage.py
+++ b/anki/storage.py
@@ -6,7 +6,7 @@ import copy
 import json
 import os
 import re
-from typing import Any, Dict, Tuple
+from typing import Any, Dict, Optional, Tuple
 
 from anki.backend import Backend
 from anki.collection import _Collection
@@ -23,8 +23,12 @@ from anki.stdmodels import (
 from anki.utils import intTime, isWin
 
 
+class ServerData:
+    minutes_west: Optional[int]
+
+
 def Collection(
-    path: str, lock: bool = True, server: bool = False, log: bool = False
+    path: str, lock: bool = True, server: Optional[ServerData] = None, log: bool = False
 ) -> _Collection:
     "Open a new or existing collection. Path must be unicode."
     backend = Backend()
diff --git a/anki/sync.py b/anki/sync.py
index 26359b324..0ddec2033 100644
--- a/anki/sync.py
+++ b/anki/sync.py
@@ -36,7 +36,7 @@ class UnexpectedSchemaChange(Exception):
 class Syncer:
     cursor: Optional[sqlite3.Cursor]
 
-    def __init__(self, col, server=None) -> None:
+    def __init__(self, col: "anki.storage._Collection", server=None) -> None:
         self.col = col
         self.server = server
 
@@ -95,7 +95,9 @@ class Syncer:
             return "basicCheckFailed"
         # step 2: startup and deletions
         runHook("sync", "meta")
-        rrem = self.server.start(minUsn=self.minUsn, lnewer=self.lnewer)
+        rrem = self.server.start(
+            minUsn=self.minUsn, lnewer=self.lnewer, offset=self.col.localOffset()
+        )
 
         # apply deletions to server
         lgraves = self.removed()
@@ -178,7 +180,9 @@ class Syncer:
 
     def changes(self) -> dict:
         "Bundle up small objects."
-        d = dict(models=self.getModels(), decks=self.getDecks(), tags=self.getTags())
+        d: Dict[str, Any] = dict(
+            models=self.getModels(), decks=self.getDecks(), tags=self.getTags()
+        )
         if self.lnewer:
             d["conf"] = self.getConf()
             d["crt"] = self.col.crt
@@ -328,7 +332,7 @@ from notes where %s"""
 
     def remove(self, graves) -> None:
         # pretend to be the server so we don't set usn = -1
-        self.col.server = True
+        self.col.server = True  # type: ignore
 
         # notes first, so we don't end up with duplicate graves
         self.col._remNotes(graves["notes"])
@@ -338,7 +342,7 @@ from notes where %s"""
         for oid in graves["decks"]:
             self.col.decks.rem(oid, childrenToo=False)
 
-        self.col.server = False
+        self.col.server = False  # type: ignore
 
     # Models
     ##########################################################################