diff --git a/src/services/wiki_masters.py b/src/services/wiki_masters.py
index 7e87af6..5f4539e 100644
--- a/src/services/wiki_masters.py
+++ b/src/services/wiki_masters.py
@@ -1,7 +1,7 @@
 import httpx
 from supabase import create_client, Client
 from loguru import logger
-import datetime
+from datetime import datetime, timedelta, timezone
 from ..lib.supabase_cookie import get_auth_cookies
 from ..lib.utils import HumanReadable as hr
 # supabase ?
@@ -18,6 +18,8 @@ class WikiMastersClient:
     SUPABASE_URL = "https://cyrxjeppjqsxxjayfrur.supabase.co"
     SUPABASE_KEY = "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJzdXBhYmFzZSIsInJlZiI6ImN5cnhqZXBwanFzeHhqYXlmcnVyIiwicm9sZSI6ImFub24iLCJpYXQiOjE3NzM4ODAzMzksImV4cCI6MjA4OTQ1NjMzOX0.BZluyXygNxuQGDPxFX1zG5i-cqp10CVK-8GGtuak4Rg"
 
+    ONE_PACK_TIME = timedelta(minutes=10)
+
     def __init__(self) -> None:
         self.logger = logger.bind(service=self.__class__.__name__)
 
@@ -74,20 +76,18 @@ class WikiMastersClient:
             _id = d["id"]
             _username = d["username"]
             _packs_remaining = d["packs_remaining"]
-            _packs_last_regen_at = datetime.datetime.fromisoformat(
+            _packs_last_regen_at = datetime.fromisoformat(
                 d["packs_last_regen_at"]
             )
 
             # Does this math still works when we are opening the 9th pack ?
+            next_pack_in = WikiMastersClient.ONE_PACK_TIME - (
+                datetime.now(tz=timezone.utc) - _packs_last_regen_at
+            )
+            next_run_in = next_pack_in + WikiMastersClient.ONE_PACK_TIME * (9 - _packs_remaining) - timedelta(seconds=10)
+
             self.logger.info(
                 "Next pack is in {}",
-                hr.seconds_to_human(
-                    (
-                        datetime.timedelta(minutes=10)
-                        - (
-                            datetime.datetime.now(tz=datetime.timezone.utc)
-                            - _packs_last_regen_at
-                        )
-                    ).total_seconds()
-                ),
+                hr.seconds_to_human(next_pack_in.total_seconds()),
             )
+            self.logger.debug("We should schedule in {}", hr.seconds_to_human(next_run_in.total_seconds()))