feat(weather): update navigate icons

gallery/easel/route/view/common/utils/template.py

@@ -1,3 +1,4 @@
+import datetime
 from pathlib import Path
 
 from babel.dates import format_date
@@ -7,6 +8,7 @@ from fastapi.templating import Jinja2Templates
 from gallery.version import __version__
 
 from ...translation import _
+from .tag import TagUtil
 
 
 def is_widget(request: Request) -> bool:
@@ -31,6 +33,9 @@ def build_templates(templates_dir: Path | None = None, filters: dict | None = No
             "_": _,
             "version": __version__,
             "format_date": format_date,
+            "datetime": datetime,
+            "tag_util": TagUtil,
+            "DATE_FORMAT": "E, d MMMM Y",
         }
     )
     if filters: