diff --git a/backend/UniVerse.Application/Interfaces/IScheduleSyncService.cs b/backend/UniVerse.Application/Interfaces/IScheduleSyncService.cs
index febc25d..5e14dab 100644
--- a/backend/UniVerse.Application/Interfaces/IScheduleSyncService.cs
+++ b/backend/UniVerse.Application/Interfaces/IScheduleSyncService.cs
@@ -19,8 +19,66 @@ public interface IModeusApiClient
 }
 
 // Modeus API response models
-public record ModeusEvent(string Id, string Name, DateTime StartsAt, DateTime EndsAt, string? RoomId, string? TeacherId, string? TypeId);
-public record ModeusEventsResponse(List<ModeusEvent> Events);
+public class ModeusEvent
+{
+    public string Id { get; init; } = string.Empty;
+    public string Name { get; init; } = string.Empty;
+    public string? NameShort { get; init; }
+    public string? Description { get; init; }
+    public string? TypeId { get; init; }
+    public DateTime StartsAt { get; init; }
+    public DateTime EndsAt { get; init; }
+
+    [JsonPropertyName("_links")]
+    public ModeusEventLinks? Links { get; init; }
+}
+
+public class ModeusEventLinks
+{
+    [JsonPropertyName("course-unit-realization")]
+    public ModeusHrefLink? CourseUnitRealization { get; init; }
+}
+
+public class ModeusEventsResponse
+{
+    [JsonPropertyName("_embedded")]
+    public ModeusEventsEmbedded? Embedded { get; init; }
+    public List<ModeusEvent>? Events { get; init; }
+    public ModeusPage? Page { get; init; }
+
+    [JsonIgnore]
+    public IReadOnlyList<ModeusEvent> EventItems => Embedded?.Events ?? Events ?? [];
+}
+public class ModeusEventsEmbedded
+{
+    public List<ModeusEvent>? Events { get; init; }
+
+    [JsonPropertyName("course-unit-realizations")]
+    public List<ModeusCourseUnitRealization>? CourseUnitRealizations { get; init; }
+
+    [JsonPropertyName("event-rooms")]
+    public List<ModeusEventRoom>? EventRooms { get; init; }
+
+    [JsonPropertyName("event-teams")]
+    public List<ModeusEventTeam>? EventTeams { get; init; }
+
+    public List<ModeusRoom>? Rooms { get; init; }
+}
+public record ModeusHrefLink(string? Href);
+public record ModeusCourseUnitRealization(string Id, string Name, string? NameShort);
+public class ModeusEventRoom
+{
+    public string Id { get; init; } = string.Empty;
+
+    [JsonPropertyName("_links")]
+    public ModeusEventRoomLinks? Links { get; init; }
+}
+public class ModeusEventRoomLinks
+{
+    public ModeusHrefLink? Event { get; init; }
+    public ModeusHrefLink? Room { get; init; }
+}
+public record ModeusEventTeam(string EventId, int? Size);
 public record ModeusBuilding(string? Id, string? Name, string? NameShort, string? Address);
 public record ModeusRoom(string Id, string Name, string? NameShort, ModeusBuilding? Building, int? TotalCapacity, int? WorkingCapacity);
 public record ModeusRoomsEmbedded(List<ModeusRoom>? Rooms);
diff --git a/backend/UniVerse.Infrastructure/ExternalServices/ModeusApiClient.cs b/backend/UniVerse.Infrastructure/ExternalServices/ModeusApiClient.cs
index 07e5031..7ee438a 100644
--- a/backend/UniVerse.Infrastructure/ExternalServices/ModeusApiClient.cs
+++ b/backend/UniVerse.Infrastructure/ExternalServices/ModeusApiClient.cs
@@ -1,4 +1,5 @@
 using System.Net.Http.Json;
+using System.Text.Json;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.Logging;
 using UniVerse.Application.DTOs.Sync;
@@ -21,11 +22,30 @@ public class ModeusApiClient : IModeusApiClient
 
     public async Task<ModeusEventsResponse> SearchEventsAsync(SyncScheduleRequest request)
     {
-        var body = new { specialtyCode = request.SpecialtyCode, timeMin = request.TimeMin, timeMax = request.TimeMax, typeId = request.TypeId };
+        const int pageSize = 900;
+        var specialtyCodes = string.IsNullOrWhiteSpace(request.SpecialtyCode)
+            ? []
+            : request.SpecialtyCode
+                .Split(',', StringSplitOptions.TrimEntries | StringSplitOptions.RemoveEmptyEntries);
+        var typeIds = request.TypeId ?? [];
+        var body = new Dictionary<string, object?>
+        {
+            ["size"] = pageSize,
+            ["timeMin"] = request.TimeMin,
+            ["timeMax"] = request.TimeMax,
+            ["specialtyCode"] = specialtyCodes
+        };
+
+        if (typeIds.Count > 0)
+            body["typeId"] = typeIds;
+
         var response = await _http.PostAsJsonAsync("/api/proxy/events/search", body);
+        var requestJson = JsonSerializer.Serialize(body);
         await EnsureSuccessAsync(response, "Modeus events search",
-            $"specialtyCode={request.SpecialtyCode ?? "<empty>"}, timeMin={request.TimeMin:O}, timeMax={request.TimeMax:O}, typeId=[{string.Join(", ", request.TypeId ?? [])}]");
-        return await response.Content.ReadFromJsonAsync<ModeusEventsResponse>() ?? new(new());
+            BuildEventsRequestSummary(pageSize, specialtyCodes, request.TimeMin, request.TimeMax, typeIds, requestJson));
+        return await ReadJsonAsync<ModeusEventsResponse>(response, "Modeus events search",
+            BuildEventsRequestSummary(pageSize, specialtyCodes, request.TimeMin, request.TimeMax, typeIds, requestJson))
+            ?? new ModeusEventsResponse();
     }
 
     public async Task<ModeusRoomsResponse> SearchRoomsAsync()
@@ -50,7 +70,9 @@ public class ModeusApiClient : IModeusApiClient
             await EnsureSuccessAsync(response, "Modeus rooms search",
                 $"name=<empty>, sort=+building.name,+name, size={pageSize}, page={page}, deleted=false");
 
-            var payload = await response.Content.ReadFromJsonAsync<ModeusRoomsResponse>() ?? new ModeusRoomsResponse();
+            var payload = await ReadJsonAsync<ModeusRoomsResponse>(response, "Modeus rooms search",
+                $"name=<empty>, sort=+building.name,+name, size={pageSize}, page={page}, deleted=false")
+                ?? new ModeusRoomsResponse();
             allRooms.AddRange(payload.RoomItems);
 
             totalPages = payload.Page?.TotalPages ?? page + 1;
@@ -66,15 +88,54 @@ public class ModeusApiClient : IModeusApiClient
         if (response.IsSuccessStatusCode) return;
 
         var responseBody = await response.Content.ReadAsStringAsync();
-        if (responseBody.Length > 2000)
-            responseBody = string.Concat(responseBody.AsSpan(0, 2000), "...<truncated>");
 
         throw new HttpRequestException(
-            $"{operation} failed with HTTP {(int)response.StatusCode} {response.ReasonPhrase}. Request: {requestSummary}. Response body: {responseBody}",
+            $"{operation} failed with HTTP {(int)response.StatusCode} {response.ReasonPhrase}. Request: {requestSummary}. Response body: {Truncate(responseBody)}",
             null,
             response.StatusCode);
     }
 
+    private static string BuildEventsRequestSummary(
+        int size,
+        IReadOnlyList<string> specialtyCodes,
+        DateTime? timeMin,
+        DateTime? timeMax,
+        IReadOnlyList<string> typeIds,
+        string requestJson)
+    {
+        var typeFilter = typeIds.Count > 0 ? $"typeId=[{string.Join(", ", typeIds)}]" : "typeId=<omitted>";
+        return $"size={size}, specialtyCode=[{string.Join(", ", specialtyCodes)}], timeMin={timeMin:O}, timeMax={timeMax:O}, {typeFilter}. Request JSON: {requestJson}";
+    }
+
+    private static async Task<T?> ReadJsonAsync<T>(HttpResponseMessage response, string operation, string requestSummary)
+    {
+        var responseBody = await response.Content.ReadAsStringAsync();
+        var contentType = response.Content.Headers.ContentType?.ToString() ?? "<empty>";
+        var contentLength = response.Content.Headers.ContentLength?.ToString() ?? "<unknown>";
+
+        if (string.IsNullOrWhiteSpace(responseBody))
+        {
+            throw new HttpRequestException(
+                $"{operation} returned HTTP {(int)response.StatusCode} {response.ReasonPhrase} with an empty response body. Request: {requestSummary}. Content-Type: {contentType}. Content-Length: {contentLength}.",
+                null,
+                response.StatusCode);
+        }
+
+        try
+        {
+            return JsonSerializer.Deserialize<T>(responseBody, new JsonSerializerOptions { PropertyNameCaseInsensitive = true });
+        }
+        catch (JsonException ex)
+        {
+            throw new InvalidOperationException(
+                $"{operation} returned invalid JSON. Request: {requestSummary}. Content-Type: {contentType}. Response body: {Truncate(responseBody)}",
+                ex);
+        }
+    }
+
+    private static string Truncate(string value) =>
+        value.Length > 2000 ? string.Concat(value.AsSpan(0, 2000), "...<truncated>") : value;
+
     public async Task<List<ModeusEmployee>> SearchEmployeeAsync(string fullname)
     {
         var response = await _http.GetFromJsonAsync<List<ModeusEmployee>>(
diff --git a/backend/UniVerse.Infrastructure/Services/ScheduleSyncService.cs b/backend/UniVerse.Infrastructure/Services/ScheduleSyncService.cs
index 35c3aad..250127d 100644
--- a/backend/UniVerse.Infrastructure/Services/ScheduleSyncService.cs
+++ b/backend/UniVerse.Infrastructure/Services/ScheduleSyncService.cs
@@ -1,5 +1,6 @@
 using Microsoft.EntityFrameworkCore;
 using Microsoft.Extensions.Logging;
+using System.Text.Json;
 using UniVerse.Application.DTOs.Sync;
 using UniVerse.Application.Interfaces;
 using UniVerse.Domain.Entities;
@@ -26,15 +27,58 @@ public class ScheduleSyncService : IScheduleSyncService
         try
         {
             var events = await _modeus.SearchEventsAsync(request);
-            foreach (var ev in events.Events)
+            foreach (var ev in events.EventItems)
             {
+                if (string.IsNullOrWhiteSpace(ev.Id) || string.IsNullOrWhiteSpace(ev.Name))
+                {
+                    skipped++;
+                    continue;
+                }
+
+                var courseUnitId = GetHrefId(ev.Links?.CourseUnitRealization?.Href);
+                var courseUnit = events.Embedded?.CourseUnitRealizations?
+                    .FirstOrDefault(c => c.Id == courseUnitId);
+                var courseExternalId = courseUnit?.Id ?? ev.TypeId ?? ev.Id;
+                var courseName = courseUnit?.Name ?? ev.Name;
+                var location = await UpsertEventLocationAsync(events, ev.Id);
+                var maxEnrollments = events.Embedded?.EventTeams?
+                    .FirstOrDefault(team => team.EventId == ev.Id)?.Size ?? 0;
+                var startsAt = EnsureUtc(ev.StartsAt);
+                var endsAt = EnsureUtc(ev.EndsAt);
+
                 var existing = await _db.Lectures.FirstOrDefaultAsync(l => l.ExternalId == ev.Id);
-                if (existing != null) { updated++; existing.StartsAt = ev.StartsAt; existing.EndsAt = ev.EndsAt; existing.UpdatedAt = DateTime.UtcNow; }
+                if (existing != null)
+                {
+                    existing.Title = ev.Name;
+                    existing.Description = ev.Description;
+                    existing.StartsAt = startsAt;
+                    existing.EndsAt = endsAt;
+                    existing.LocationId = location?.Id;
+                    existing.MaxEnrollments = maxEnrollments;
+                    existing.UpdatedAt = DateTime.UtcNow;
+                    updated++;
+                }
                 else
                 {
-                    var course = await _db.Courses.FirstOrDefaultAsync(c => c.ExternalId == ev.TypeId);
-                    if (course == null) { course = new Course { Name = ev.Name, ExternalId = ev.TypeId, IsSynced = true }; _db.Courses.Add(course); await _db.SaveChangesAsync(); }
-                    _db.Lectures.Add(new Lecture { CourseId = course.Id, Title = ev.Name, ExternalId = ev.Id, StartsAt = ev.StartsAt, EndsAt = ev.EndsAt });
+                    var course = await _db.Courses.FirstOrDefaultAsync(c => c.ExternalId == courseExternalId);
+                    if (course == null)
+                    {
+                        course = new Course { Name = courseName, ExternalId = courseExternalId, IsSynced = true };
+                        _db.Courses.Add(course);
+                        await _db.SaveChangesAsync();
+                    }
+
+                    _db.Lectures.Add(new Lecture
+                    {
+                        CourseId = course.Id,
+                        LocationId = location?.Id,
+                        Title = ev.Name,
+                        Description = ev.Description,
+                        ExternalId = ev.Id,
+                        StartsAt = startsAt,
+                        EndsAt = endsAt,
+                        MaxEnrollments = maxEnrollments
+                    });
                     created++;
                 }
             }
@@ -46,6 +90,9 @@ public class ScheduleSyncService : IScheduleSyncService
         catch (Exception ex)
         {
             _logger.LogError(ex, "Schedule sync failed");
+            var specialtyCodes = string.IsNullOrWhiteSpace(request.SpecialtyCode)
+                ? []
+                : request.SpecialtyCode.Split(',', StringSplitOptions.TrimEntries | StringSplitOptions.RemoveEmptyEntries);
             var result = new SyncResultDto(created, updated, skipped, ex.Message, BuildErrorDetails(
                 ex,
                 stage,
@@ -53,10 +100,14 @@ public class ScheduleSyncService : IScheduleSyncService
                 updated,
                 skipped,
                 [
-                    $"specialtyCode={request.SpecialtyCode ?? "<empty>"}",
+                    "size=900",
+                    $"requestJson={BuildScheduleRequestJson(request)}",
+                    $"specialtyCode=[{string.Join(", ", specialtyCodes)}]",
                     $"timeMin={request.TimeMin:O}",
                     $"timeMax={request.TimeMax:O}",
-                    $"typeId=[{string.Join(", ", request.TypeId ?? [])}]"
+                    request.TypeId is { Count: > 0 }
+                        ? $"typeId=[{string.Join(", ", request.TypeId)}]"
+                        : "typeId=<omitted>"
                 ]));
             _lastStatus = new SyncStatusDto(DateTime.UtcNow, "failed", result);
             return result;
@@ -129,6 +180,48 @@ public class ScheduleSyncService : IScheduleSyncService
 
     public Task<SyncStatusDto> GetLastSyncStatusAsync() => Task.FromResult(_lastStatus);
 
+    private async Task<Location?> UpsertEventLocationAsync(ModeusEventsResponse events, string eventId)
+    {
+        var roomId = events.Embedded?.EventRooms?
+            .Select(eventRoom => new
+            {
+                EventId = GetHrefId(eventRoom.Links?.Event?.Href),
+                RoomId = GetHrefId(eventRoom.Links?.Room?.Href)
+            })
+            .FirstOrDefault(link => link.EventId == eventId)
+            ?.RoomId;
+
+        if (string.IsNullOrWhiteSpace(roomId))
+            return null;
+
+        var room = events.Embedded?.Rooms?.FirstOrDefault(item => item.Id == roomId);
+        if (room == null || string.IsNullOrWhiteSpace(room.Name))
+            return null;
+
+        var existing = await _db.Locations.FirstOrDefaultAsync(location => location.ExternalId == room.Id);
+        if (existing != null)
+        {
+            existing.Name = room.Name;
+            existing.Room = room.NameShort;
+            existing.Building = room.Building?.Name ?? room.Building?.NameShort;
+            existing.Address = room.Building?.Address;
+            return existing;
+        }
+
+        var location = new Location
+        {
+            Name = room.Name,
+            Room = room.NameShort,
+            Building = room.Building?.Name ?? room.Building?.NameShort,
+            Address = room.Building?.Address,
+            ExternalId = room.Id
+        };
+
+        _db.Locations.Add(location);
+        await _db.SaveChangesAsync();
+        return location;
+    }
+
     private static IReadOnlyList<string> BuildErrorDetails(
         Exception exception,
         string stage,
@@ -154,4 +247,43 @@ public class ScheduleSyncService : IScheduleSyncService
         details.AddRange(context);
         return details;
     }
+
+    private static string BuildScheduleRequestJson(SyncScheduleRequest request)
+    {
+        var specialtyCodes = string.IsNullOrWhiteSpace(request.SpecialtyCode)
+            ? []
+            : request.SpecialtyCode.Split(',', StringSplitOptions.TrimEntries | StringSplitOptions.RemoveEmptyEntries);
+
+        var body = new Dictionary<string, object?>
+        {
+            ["size"] = 900,
+            ["timeMin"] = request.TimeMin,
+            ["timeMax"] = request.TimeMax,
+            ["specialtyCode"] = specialtyCodes
+        };
+
+        if (request.TypeId is { Count: > 0 })
+            body["typeId"] = request.TypeId;
+
+        return JsonSerializer.Serialize(body);
+    }
+
+    private static string? GetHrefId(string? href)
+    {
+        if (string.IsNullOrWhiteSpace(href))
+            return null;
+
+        var index = href.LastIndexOf('/');
+        return index >= 0 && index < href.Length - 1
+            ? href[(index + 1)..]
+            : href;
+    }
+
+    private static DateTime EnsureUtc(DateTime value) =>
+        value.Kind switch
+        {
+            DateTimeKind.Utc => value,
+            DateTimeKind.Local => value.ToUniversalTime(),
+            _ => DateTime.SpecifyKind(value, DateTimeKind.Local).ToUniversalTime()
+        };
 }
diff --git a/frontend/src/views/admin/AdminLecturesView.vue b/frontend/src/views/admin/AdminLecturesView.vue
index 1aa281f..872e4df 100644
--- a/frontend/src/views/admin/AdminLecturesView.vue
+++ b/frontend/src/views/admin/AdminLecturesView.vue
@@ -51,14 +51,16 @@ function toInputDateTime(date: Date) {
   return new Date(date.getTime() - offsetMs).toISOString().slice(0, 16)
 }
 
-const now = new Date()
-const inTwoWeeks = new Date(now)
+const todayStart = new Date()
+todayStart.setHours(0, 0, 0, 0)
+const inTwoWeeks = new Date(todayStart)
 inTwoWeeks.setDate(inTwoWeeks.getDate() + 14)
+inTwoWeeks.setHours(23, 59, 0, 0)
 
 const syncForm = ref({
   specialtyCode: '',
   typeIds: [] as ApiScheduleTypeId[],
-  timeMin: toInputDateTime(now),
+  timeMin: toInputDateTime(todayStart),
   timeMax: toInputDateTime(inTwoWeeks),
 })