In the case a, the reference time is GMT, and the stored time values are correct worldwide. The
simple change in the TZ variable allows the local time to be printed correctly in any time zone.
In the case b, the reference time is Eastern Standard Time, and the only conversion performed is
daylight saving time( DST) . Therefore, it is not necessary to adjust the hardware clock for daylight
saving time(DST) twice a year.
In the case c, the reference time is always the reported time. You can use this option if the
hardware clock on your machine automatically adjusts for daylight saving time(DST), or you want to
manually adjust the hardware time twice a year.
Plain Text
copy
1
2
TZ= EST5 EDT
export TZ
If you want the time zone setting to be valid after rebooting the EC900, please ensure including the
TZ setting in the /etc/rc.local file. The following table lists other possible values for the TZ
environment variable.
