Description: A string that appears as such: 'HHMMD' where HHMM is the time zone offset from GMT and D is whether or not daylight saving applies. Additional information: A string that appears as such: 'HHMMD' where HHMM is the time zone offset from GMT and D is whether or not daylight saving applies. Used for time regionalization. Value of time zone offset is in the form of HHMM, where 0<=MM<60 && -12<=HH<=13 && -1200<=HHMM<=1300. Hence, values of 1160 & 1301 are invalid. Acceptable times include 1300, 1159, etc. The time zone offset will be used in conjunction with daylight savings to recalculate the local time. Daylight saving (D) has a value of either 1 or 0. Hence, an acceptable string would appear as 07001 for a time zone offset of 0700 with daylight saving applied.