feat: allow same date live class creation

frontend/src/components/Modals/LiveClassModal.vue

@@ -161,21 +161,30 @@ const submitLiveClass = (close) => {
 			if (!liveClass.date) {
 				return 'Please select a date.'
 			}
-			if (dayjs(liveClass.date).isSameOrBefore(dayjs(), 'day')) {
-				return 'Please select a future date.'
-			}
 			if (!liveClass.time) {
 				return 'Please select a time.'
 			}
+			if (!liveClass.timezone) {
+				return 'Please select a timezone.'
+			}
 			if (!valideTime()) {
 				return 'Please enter a valid time in the format HH:mm.'
 			}
+			const liveClassDateTime = dayjs(`${liveClass.date}T${liveClass.time}`).tz(
+				liveClass.timezone,
+				true
+			)
+			if (
+				liveClassDateTime.isSameOrBefore(
+					dayjs().tz(liveClass.timezone, false),
+					'minute'
+				)
+			) {
+				return 'Please select a future date and time.'
+			}
 			if (!liveClass.duration) {
 				return 'Please select a duration.'
 			}
-			if (!liveClass.timezone) {
-				return 'Please select a timezone.'
-			}
 		},
 		onSuccess() {
 			liveClasses.value.reload()