diff --git a/pyproject.toml b/pyproject.toml
index a58551e..7bfa78e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -26,6 +26,7 @@ dependencies = [
     "requests>=2.34.2",
     "rq>=2.12.0",
     "psycopg[binary]>=3.3.6",
+    "tzdata>=2026.4",
 ]
 
 [build-system]
diff --git a/src/makeitso/__init__.py b/src/makeitso/__init__.py
index 7d80f40..d22f2ff 100644
--- a/src/makeitso/__init__.py
+++ b/src/makeitso/__init__.py
@@ -4,6 +4,7 @@
 
 from makeitso.config import configs
 from makeitso.extensions import bootstrap, csrf, db, job_queue, migrate, oauth
+from makeitso.local_time import local_time
 
 
 def create_app(config_name: str | None = None) -> Flask:
@@ -23,6 +24,7 @@ def create_app(config_name: str | None = None) -> Flask:
     migrate.init_app(app, db)
     job_queue.init_app(app)
     oauth.init_app(app)
+    app.add_template_filter(local_time)
 
     from makeitso import models  # noqa: F401  (registers the models with SQLAlchemy)
     from makeitso.auth import bp as auth_bp
diff --git a/src/makeitso/local_time.py b/src/makeitso/local_time.py
new file mode 100644
index 0000000..2b7e822
--- /dev/null
+++ b/src/makeitso/local_time.py
@@ -0,0 +1,11 @@
+from datetime import UTC, datetime
+from zoneinfo import ZoneInfo
+
+LOCAL_TZ = ZoneInfo("America/Vancouver")
+
+
+def local_time(dt: datetime, fmt: str = "%b %d, %Y %H:%M Vancouver time") -> str:
+    # Naive datetimes are UTC
+    if dt.tzinfo is None:
+        dt = dt.replace(tzinfo=UTC)
+    return dt.astimezone(LOCAL_TZ).strftime(fmt)
diff --git a/src/makeitso/monitor/monitor.py b/src/makeitso/monitor/monitor.py
index 4d321bc..5533bc8 100644
--- a/src/makeitso/monitor/monitor.py
+++ b/src/makeitso/monitor/monitor.py
@@ -13,6 +13,7 @@
 )
 
 from makeitso.extensions import job_queue
+from makeitso.local_time import local_time
 
 # Most jobs to show per queue and per registry, so old failed jobs don't pile up on the page
 MAX_JOBS = 50
@@ -73,7 +74,7 @@ def get_queue_data(queue: Queue):
             JobData(
                 id=job.id,
                 status=job.get_status().value,
-                started_at=(job.started_at.strftime("%b %d, %Y %H:%M") if job.started_at else None),
+                started_at=(local_time(job.started_at) if job.started_at else None),
                 execution_time=_execution_time(job),
             )
             for job in jobs
diff --git a/src/makeitso/stacks/forms.py b/src/makeitso/stacks/forms.py
index d21da6a..6839413 100644
--- a/src/makeitso/stacks/forms.py
+++ b/src/makeitso/stacks/forms.py
@@ -1,6 +1,6 @@
 from flask_wtf import FlaskForm
 from github import GithubException
-from wtforms import BooleanField, Field, StringField, TextAreaField
+from wtforms import BooleanField, Field, StringField, SubmitField, TextAreaField
 from wtforms.validators import DataRequired, Regexp, ValidationError
 
 from makeitso.extensions import db
@@ -81,13 +81,14 @@ def _strip(value: str | None) -> str | None:
 
 
 class LockForm(FlaskForm):
-    locked = BooleanField("Lock this stack")
+    lock = SubmitField("Lock")
+    unlock = SubmitField("Unlock")
     lock_reason = TextAreaField(
         "Reason", description="Shown on the stack page. Needed when locking.", filters=[_strip]
     )
 
     def validate_lock_reason(self, field: Field) -> None:
-        if self.locked.data and not field.data:
+        if self.lock.data and not field.data:
             raise ValidationError("Give a reason for locking the stack")
 
 
diff --git a/src/makeitso/stacks/views/settings.py b/src/makeitso/stacks/views/settings.py
index dcb7e64..df2ff19 100644
--- a/src/makeitso/stacks/views/settings.py
+++ b/src/makeitso/stacks/views/settings.py
@@ -47,7 +47,7 @@ def post(self, stack_id: int):
         form = _lock_form(stack)
         if not form.validate_on_submit():
             return _render(stack, form, _env_var_form())
-        stack.locked = form.locked.data
+        stack.locked = form.lock.data
         stack.lock_reason = form.lock_reason.data if stack.locked else None
         db.session.commit()
         flash("Stack locked" if stack.locked else "Stack unlocked", "success")
diff --git a/src/makeitso/templates/deploys/detail.html b/src/makeitso/templates/deploys/detail.html
index b6a931d..42b5a26 100644
--- a/src/makeitso/templates/deploys/detail.html
+++ b/src/makeitso/templates/deploys/detail.html
@@ -23,7 +23,7 @@ <h1 class="h4 mb-0">
     <p class="mb-2">{{ deploy.commit.commit_message }}</p>
     {% set details = [
         ("person", "Author", deploy.commit.author_name),
-        ("clock", "Started", deploy.started_at.strftime("%b %d, %Y %H:%M")),
+        ("clock", "Started", deploy.started_at|local_time),
         ("person-check", "Deployed by", deployed_by(deploy)),
     ] %}
     <ul class="list-inline small text-muted mb-4">
diff --git a/src/makeitso/templates/deploys/list.html b/src/makeitso/templates/deploys/list.html
index 396020e..fafc723 100644
--- a/src/makeitso/templates/deploys/list.html
+++ b/src/makeitso/templates/deploys/list.html
@@ -27,7 +27,7 @@
                         {{ bypass_badge(deploy) }}
                     </td>
                     <td class="text-nowrap">{{ deployed_by(deploy) }}</td>
-                    <td class="text-nowrap">{{ deploy.started_at.strftime("%b %d, %Y %H:%M") }}</td>
+                    <td class="text-nowrap">{{ deploy.started_at|local_time }}</td>
                     <td class="text-nowrap">{{ deploy.elapsed }}</td>
                     <td><a class="text-nowrap text-decoration-none" href="{{ url_for('stacks.deploys.detail', stack_id=stack.id, deploy_id=deploy.id) }}">{{ render_icon("terminal") }} View log</a></td>
                 </tr>
diff --git a/src/makeitso/templates/main/index.html b/src/makeitso/templates/main/index.html
index fa5d3f3..022ea88 100644
--- a/src/makeitso/templates/main/index.html
+++ b/src/makeitso/templates/main/index.html
@@ -35,7 +35,7 @@ <h1 class="h3 mb-0">Stacks</h1>
                             <a href="{{ stack_url }}" class="fw-semibold">{{ stack.organization }}/{{ stack.repository }}</a>
                             <span class="badge rounded-pill text-bg-warning ms-1">{{ stack.environment }}</span>
                             {% if stack.locked %}
-                                <span class="badge text-bg-secondary ms-1" title="{{ stack.lock_reason }}">Locked</span>
+                                <span class="ms-1" title="Locked: {{ stack.lock_reason }}">{{ render_icon("lock-fill", color="secondary") }}</span>
                             {% endif %}
                         </td>
                         <td><code>{{ stack.branch }}</code></td>
@@ -56,7 +56,7 @@ <h1 class="h3 mb-0">Stacks</h1>
                             {% elif state.latest %}
                                 {{ status_badge(state.latest.status) }}
                                 <span class="small text-muted">
-                                    {{ state.latest.started_at.strftime("%b %d, %H:%M") }} by {{ deployed_by(state.latest) }}
+                                    {{ state.latest.started_at|local_time("%b %d, %H:%M Vancouver time") }} by {{ deployed_by(state.latest) }}
                                 </span>
                             {% else %}
                                 <span class="text-muted">no deploys yet</span>
diff --git a/src/makeitso/templates/stacks/_commit_row.html b/src/makeitso/templates/stacks/_commit_row.html
index fc38641..78df453 100644
--- a/src/makeitso/templates/stacks/_commit_row.html
+++ b/src/makeitso/templates/stacks/_commit_row.html
@@ -27,7 +27,7 @@
                target="_blank" rel="noopener" class="text-muted">#{{ commit.pull_request_number }}</a>
         {% endif %}
         <div class="small text-muted">
-            <code>{{ commit.short_sha }}</code> · {{ commit.committed_at.strftime("%b %d, %Y %H:%M") }}
+            <code>{{ commit.short_sha }}</code> · {{ commit.committed_at|local_time }}
         </div>
     </div>
     {% if show_deploy %}
diff --git a/src/makeitso/templates/stacks/_commits.html b/src/makeitso/templates/stacks/_commits.html
index 6a80c5f..8847407 100644
--- a/src/makeitso/templates/stacks/_commits.html
+++ b/src/makeitso/templates/stacks/_commits.html
@@ -12,7 +12,7 @@
         <p class="small text-muted mb-2">Syncing with GitHub…</p>
     {% else %}
         <p class="small text-muted mb-2">
-            {% if stack.synced_at %}Last synced {{ stack.synced_at.strftime("%b %d, %Y %H:%M") }}{% else %}Never synced{% endif %}
+            {% if stack.synced_at %}Last synced {{ stack.synced_at|local_time }}{% else %}Never synced{% endif %}
         </p>
     {% endif %}
 
@@ -85,7 +85,7 @@ <h2 class="h5">Previous deploys</h2>
                     {{ bypass_badge(deploy) }}
                     <span class="small text-muted d-inline-flex align-items-center gap-3 text-nowrap">
                         <span title="Deployed by">{{ render_icon("person-check") }} {{ deployed_by(deploy) }}</span>
-                        <span title="Started">{{ render_icon("clock") }} {{ deploy.started_at.strftime("%b %d, %Y %H:%M") }}</span>
+                        <span title="Started">{{ render_icon("clock") }} {{ deploy.started_at|local_time }}</span>
                         <span title="Took">{{ render_icon("stopwatch") }} {{ deploy.elapsed }}</span>
                     </span>
                     <a class="text-nowrap text-decoration-none" href="{{ url_for('stacks.deploys.detail', stack_id=stack.id, deploy_id=deploy.id) }}">{{ render_icon("terminal") }} View log</a>
diff --git a/src/makeitso/templates/stacks/settings.html b/src/makeitso/templates/stacks/settings.html
index 83f39e4..374529e 100644
--- a/src/makeitso/templates/stacks/settings.html
+++ b/src/makeitso/templates/stacks/settings.html
@@ -28,9 +28,13 @@ <h1 class="h4 pb-2">Lock deploys</h1>
     </p>
     <form method="post" action="{{ url_for('stacks.lock', stack_id=stack.id) }}" class="mb-5" style="max-width: 40rem" novalidate>
         {{ lock_form.hidden_tag() }}
-        {{ render_field(lock_form.locked) }}
-        {{ render_field(lock_form.lock_reason, rows=2, placeholder="e.g. Release freeze until Monday") }}
-        <button type="submit" class="btn btn-primary">Save</button>
+        {% if stack.locked %}
+            <p>Locked: {{ stack.lock_reason }}</p>
+            <button type="submit" name="lock-unlock" value="y" class="btn btn-outline-secondary d-inline-flex align-items-center gap-2">{{ render_icon("unlock-fill") }} Unlock</button>
+        {% else %}
+            {{ render_field(lock_form.lock_reason, rows=2, placeholder="e.g. Release freeze until Monday") }}
+            <button type="submit" name="lock-lock" value="y" class="btn btn-warning d-inline-flex align-items-center gap-2">{{ render_icon("lock-fill") }} Lock</button>
+        {% endif %}
     </form>
 
     <h1 class="h4 pb-2">Environment variables</h1>
diff --git a/uv.lock b/uv.lock
index 2fd3b58..e074c68 100644
--- a/uv.lock
+++ b/uv.lock
@@ -547,6 +547,7 @@ dependencies = [
     { name = "redis" },
     { name = "requests" },
     { name = "rq" },
+    { name = "tzdata" },
 ]
 
 [package.dev-dependencies]
@@ -576,6 +577,7 @@ requires-dist = [
     { name = "redis", specifier = ">=8.1.0" },
     { name = "requests", specifier = ">=2.34.2" },
     { name = "rq", specifier = ">=2.12.0" },
+    { name = "tzdata", specifier = ">=2026.4" },
 ]
 
 [package.metadata.requires-dev]