Karachi   - All the CNG stations in Sindh will remain closed on Feb 22 from 8:00am till 8:00am, on Feb 23 for 24 hours only.  According to an announcement of Sui Southern Gas Company here on Thursday, this step has been taken by the gas utility due to gas load management programme.  SSGC regrets the inconvenience caused to the CNG users during the above notified 24-hour shut down period.