Retrieve SQL Server Installation Date Time

SQL Server Installation date

SELECT create_date
FROM sys.server_principals
WHERE sid = 0x010100000000000512000000

-- Evaluation Version Expire Date

SELECT create_date AS InstallationDate,
DATEADD(DD, 180, create_date) AS 'Expiry Date'
FROM sys.server_principals
WHERE sid = 0x010100000000000512000000