diff --git a/frappe/email/doctype/newsletter/newsletter.js b/frappe/email/doctype/newsletter/newsletter.js
index 8a81bbaab3..5b1a831759 100644
--- a/frappe/email/doctype/newsletter/newsletter.js
+++ b/frappe/email/doctype/newsletter/newsletter.js
@@ -112,12 +112,14 @@ frappe.ui.form.on("Newsletter", {
 					options: {
 						minDate: new Date(),
 					},
+					reqd: true,
 				},
 				{
 					label: __("Time"),
 					fieldname: "time",
 					fieldtype: "Select",
 					options: time_slots,
+					reqd: true,
 				},
 			],
 			primary_action_label: __("Schedule"),
diff --git a/frappe/email/doctype/newsletter/newsletter.py b/frappe/email/doctype/newsletter/newsletter.py
index 09200e3635..5aabe3d85e 100644
--- a/frappe/email/doctype/newsletter/newsletter.py
+++ b/frappe/email/doctype/newsletter/newsletter.py
@@ -55,6 +55,7 @@ class Newsletter(WebsiteGenerator):
 		self.validate_sender_address()
 		self.validate_recipient_address()
 		self.validate_publishing()
+		self.validate_scheduling_date()
 
 	@property
 	def newsletter_recipients(self) -> list[str]:
@@ -153,6 +154,13 @@ class Newsletter(WebsiteGenerator):
 		if self.send_webview_link and not self.published:
 			frappe.throw(_("Newsletter must be published to send webview link in email"))
 
+	def validate_scheduling_date(self):
+		if (
+			self.schedule_sending
+			and frappe.utils.get_datetime(self.schedule_send) < frappe.utils.now_datetime()
+		):
+			frappe.throw(_("Past dates are not allowed for Scheduling."))
+
 	def get_linked_email_queue(self) -> list[str]:
 		"""Get list of email queue linked to this newsletter."""
 		return frappe.get_all(
diff --git a/frappe/email/doctype/newsletter/test_newsletter.py b/frappe/email/doctype/newsletter/test_newsletter.py
index a25b6bda02..edbc8ff425 100644
--- a/frappe/email/doctype/newsletter/test_newsletter.py
+++ b/frappe/email/doctype/newsletter/test_newsletter.py
@@ -96,6 +96,8 @@ class TestNewsletterMixin:
 			newsletter.send_emails()
 			return newsletter.name
 
+		return newsletter
+
 	@staticmethod
 	def get_newsletter(**kwargs) -> "Newsletter":
 		"""Generate and return Newsletter object"""
@@ -162,7 +164,9 @@ class TestNewsletter(TestNewsletterMixin, FrappeTestCase):
 				self.assertTrue(email in recipients)
 
 	def test_schedule_send(self):
-		self.send_newsletter(schedule_send=add_days(getdate(), -1))
+		newsletter = self.send_newsletter(schedule_send=add_days(getdate(), 1))
+		newsletter.db_set("schedule_send", add_days(getdate(), -1))  # Set date in past
+		send_scheduled_email()
 
 		email_queue_list = [frappe.get_doc("Email Queue", e.name) for e in frappe.get_all("Email Queue")]
 		self.assertEqual(len(email_queue_list), 4)