In order to determine the Time Zone values, perform the bit mask operation of the flag value with the combined bit mask value 0x1F800000 as shown below. Bits 23-28 correspond to the Time Zone bits in the Flags.
The RCPP command to enable/ disable the privacy masks is CONF_PRIV_MSK_POLY - 0x0bd8. Follow this article to see the rcpp command to enable & disable the privacy mask of a Bosch camera (moving or fixed).