Write SQL query to solve given problem: Provide the sunrise time recorded by the home weather station of store no.30 on 2014/2/21.. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT T1.sunrise FROM weather AS T1 INNER JOIN relation AS T2 ON T1.station_nbr = T2.station_nbr WHERE T1.`date` = '2014-02-21' AND store_nbr = 30