Сценарий на установление времени в таблице

DECLARE @TimeStart TIME = '00:00:00'
DECLARE @TimeEnd TIME = '00:19:59'

DECLARE @Iterator INT = 0

WHILE @Iterator < 72
BEGIN
    SET @Iterator = @Iterator + 1
    INSERT INTO TestDB.dbo.Dashboard_DayCalls VALUES(@TimeStart, @TimeEnd, CAST(@TimeStart AS TIME(0)), 0, 0, 0, 0)
    SET @TimeStart = DATEADD(MINUTE, 20, @TimeStart)
    SET @TimeEnd = DATEADD(MINUTE, 20, @TimeEnd)
END