JEITA CP-3451 - 30 - When this tag is used to map audio files, the relation of the audio file to image data shall also be indicated on the audio file end.   Tag = 40964 (A004.H) Type = ASCII Count = 13 Default = none F.    Tags Relating to Date and Time DateTimeOriginal The date and time when the original image data was generated. For a DSC the date and time the picture was taken are recorded. The format is "YYYY:MM:DD HH:MM:SS" with time shown in 24-hour format, and the date and time separated by one blank character [20.H]. When the date and time are unknown, all the character spaces except colons (":") may be filled with blank characters, or else the Interoperability field may be filled with blank characters. The character string length is 20 bytes including NULL for termination. When the field is left blank, it is treated as unknown.   Tag = 36867 (9003.H) Type = ASCII Count = 20 Default = none DateTimeDigitized The date and time when the image was stored as digital data. If, for example, an image was captured by DSC and at the same time the file was recorded, then the DateTimeOriginal and DateTimeDigitized will have the same contents. The format is "YYYY:MM:DD HH:MM:SS" with time shown in 24-hour format, and the date and time separated by one blank character [20.H]. When the date and time are unknown, all the character spaces except colons (":") may be filled with blank characters, or else the Interoperability field may be filled with blank characters. The character string length is 20 bytes including NULL for termination. When the field is left blank, it is treated as unknown. Tag = 36868 (9004.H) Type = ASCII Count = 20 Default = none SubsecTime A tag used to record fractions of seconds for the DateTime tag. Tag   = 37520 (9290.H) Type = ASCII Count = Any Default = none SubsecTimeOriginal A tag used to record fractions of seconds for the DateTimeOriginal tag. Tag   = 37521 (9291.H) Type = ASCII N = Any Default = none