A South Australian minister says there has been a "tremendous response" to consultations about changing the state’s time zone.

Hundreds of submissions were lodged from across South Australia on the idea of ending the half hour difference between SA and the south-eastern states.

Minister for Investment and Trade, Martin Hamilton-Smith, said the delay “can cause confusion across many aspects of our daily lives.”

Mr Hamilton-Smith, leader of the Government’s consultation process, said an online video featuring some prominent South Australians would be launched soon, in the aim of sparking more discussion,

“The State Government will also conduct a wide-reaching regional roadshow from Mount Gambier in the east through to Ceduna in the east,” he said.

“It has been encouraging to read the high level of discussion flowing onto the YourSAy website, from comments, through to emails and formal submissions.”

He said the consultation process showed that there are a lot of areas affected, with views sought on everything from sporting fixtures to Public Service administration and business transactions.

“The Restaurant and Catering Association which represents 2,000 restaurants, cafes and caterers highlighted that a change to Australian Eastern Standard time would provide surety to tourists, recreational and business travellers when planning itineraries and events,” he said.

“South Australia's commercial television networks have also provided a joint submission to support aligning with the eastern states, which highlighted the benefits of up to the minute national news and current affairs, and live social media interaction with popular programs.”

The time-zone shift consultation period ends in early April, anyone wishing to lodge a submission can visit this link.