Insert Random Number To Table Every 30 Days

Question

Hello DBA's, I need your assistance. I need to insert a random numbers (9 numbers) to my table every 30 days. I have a query to generate the random numbers but I don't know how to insert it every 30 days.

 

INSERT INTO [dbo].[tblVehicleType2]
           ([ChassisNumber])
       SELECT FLOOR(RAND() * POWER(CAST(10 as BIGINT), 9))

 

 

Any help is hightly appreciated. Thanks in advance.