Time interval

Amira,
Here is the TSQL code I used

drop table if exists example

CREATE TABLE example(
[ID] [varchar](9) NULL,
[DTTM] [datetime] NULL

) ON [PRIMARY]

Insert into [example] (ID,DTTM) values
('123456789','2017-10-05 08:00:00.000'), -- Expected Result
('123456789','2017-10-05 08:05:00.000'),
('123456789','2017-10-05 08:07:00.000'),
('123456789','2017-10-05 08:15:00.000'), -- Expected Result
('123456789','2017-10-05 08:25:00.000'),
('123456789','2017-10-05 10:12:00.000') , -- Expected Result
('123456789','2017-10-05 10:26:00.000'),
('123456789','2017-10-05 10:32:00.000'), -- Expected Result
('123456789','2017-10-05 10:33:00.000'),
('123456789','2017-10-05 10:34:00.000'),
('123456789','2017-10-05 10:35:00.000'),
('123456789','2017-10-05 10:36:00.000'),
('123456789','2017-10-05 10:37:00.000'),
('123456789','2017-10-05 10:38:00.000'),
('123456789','2017-10-05 10:39:00.000'),
('123456789','2017-10-05 10:40:00.000'),
('123456789','2017-10-05 10:41:00.000'),
('123456789','2017-10-05 10:42:00.000'),
('123456789','2017-10-05 10:43:00.000'),
('123456789','2017-10-05 10:44:00.000'),
('123456789','2017-10-05 10:45:00.000'),
('123456789','2017-10-05 10:46:00.000'),
('123456789','2017-10-05 10:47:00.000'), -- Expected Result
('123456789','2017-10-05 10:48:00.000')

Insert into [example] (ID,DTTM) values
('789','2017-10-05 08:00:00.000'), -- Expected Result
('789','2017-10-05 08:05:00.000'),
('789','2017-10-05 08:07:00.000'),
('789','2017-10-05 08:15:00.000'), -- Expected Result
('789','2017-10-05 08:25:00.000'),
('789','2017-10-05 10:12:00.000') , -- Expected Result
('789','2017-10-05 10:26:00.000'),
('789','2017-10-05 10:32:00.000'), -- Expected Result
('789','2017-10-05 10:33:00.000'),
('789','2017-10-05 10:34:00.000'),
('789','2017-10-05 10:35:00.000'),
('789','2017-10-05 10:36:00.000'),
('789','2017-10-05 10:37:00.000'),
('789','2017-10-05 10:38:00.000'),
('789','2017-10-05 10:39:00.000'),
('789','2017-10-05 10:40:00.000'),
('789','2017-10-05 10:41:00.000'),
('789','2017-10-05 10:42:00.000'),
('789','2017-10-05 10:43:00.000'),
('789','2017-10-05 10:44:00.000'),
('789','2017-10-05 10:45:00.000'),
('789','2017-10-05 10:46:00.000'),
('789','2017-10-05 10:47:00.000'), -- Expected Result
('789','2017-10-05 10:48:00.000')

Thanks,

Oded Dror