Event overlapping in month view

When ever two or more event occur at same date in month view event overlapping ocuur. and day view event not shown.

Check that problematic events
a) has end date
b) their end date is greater that start date

if end date is incorrect - the error similar to yours may occur.

Thank’s Stanislav, Its working . It happened when i store sinlge event for multiple days and event start time is greater than end time.