Electronic timepiece and control method of electronic timepiece

An electronic timepiece, comprising:

• a communication unit configured to receive identification information for identifying a radio station from the radio station;
• a storage unit configured to store a database having, as a record, the identification information and time difference information indicating a time difference associated with the identification information and to store a time zone table having region information and time difference information for each of a plurality of regions;
• a timekeeping unit in which a set time difference, that is a time difference with respect to a reference time, is set;
• a first time difference correction unit configured to, based on the identification information received by the communication unit and the database, correct the set time difference to the time difference information associated with the identification information received by the communication unit;
• a positioning unit configured to use satellite signals received from a plurality of artificial satellites to calculate position information;
• a second time difference correction unit configured to correct the set time difference to a time difference identified from the position information based on the time zone information;
• and
• an update processing unit configured to (i) acquire the identification information received by the communication unit and (ii) update the database by changing change the time difference information associated with the identification information received by the communication unit using the set time difference as corrected by the second time difference correction unit.

A control method of an electronic timepiece including a storage unit configured to store a database having a plurality of records, each record having identification information for identifying a radio station and time difference information indicating a time difference associated with the identification information;

• and a display unit configured to display a time based on a set time difference that is a time difference with respect to a reference time;
• the control method comprising:
• receiving identification information from a radio station;
• executing a first time difference correction process that corrects, based on the received identification information and the database, the set time difference to the time difference information associated with the received identification information;
• accepting user operation;
• executing a second time difference correction process that corrects the set time difference in accordance with the operation;
• and
• in response to correcting the set time difference in accordance with the operation, (i) acquiring the identification information received from the radio station and (ii) updating the database by changing the time difference information associated with the received identification information using the set time difference as corrected by the second time correction process.