The DAB+ radio updates its time from the DAB+ Radio broadcasts, a Station may not be broadcasting the correct data so try changing to another radio station (different network) to check if the issue, If you are not in a DAB+ broadcast area you have the ability in the menu to change how the radio gets it's time updates if stations are casuing issues or are not providing data. On page 14 of the instruction manual you will see Auto update options; Update from any / Update from DAB+ / Update from FM / No update.