14. Time Zone Info

• FAT stores local times

• NTFS stores UTC times

• UTC == Coordinated Universal Time - a successor to GMT

• GMT == Greenwich Mean Time, absolute time reference and doesn't change with the seasons

• Summer Time == Daylight Saving Time

• Winter Time == Standard Time

   

• Time Zone Info:

  • StandardName: time zone name

  • StandardStart: month, week, day, and time of day when the transition from daylight saving time to standard time occurs. Usually Oct/Nov

  • StandardBias: usually zero; the bias in munutes during standard time period. Can be ignored.

  • Bias: the current time zone offset from GMT, interpreted as GMT-Bias (minutes). This is the difference between GMT and current local time.

  • ActiveTimeBias: time zone offset from GMT including DaylightBias, interpreted as GMT-ActiveTimeBias (minutes)

• Daylight Saving Time Info:

  • DaylightName: daylight saving time description, e.g. "PDT", Pacific Daylight Time

  • DaylightStart: month, week, day, and time of day when the transition from standard time to daylight saving time occurs.. Usually Mar/Apr

  • DaylightBias: offset in minutes added Bias to form the current bias during daylight saving time. Usually -60.