Rational Developer for System z
COBOL for Windows, Version 7.5, Programming Guide


TZ environment parameter variables

The values for the TZ variable are defined below.

Table 24. TZ environment parameter variables
Variable Description Default value
SSS Standard time-zone identifier. This must be three characters, must begin with a letter, and can contain spaces. EST
n Difference (in hours) between the standard time zone and coordinated universal time (UTC), formerly called Greenwich mean time (GMT). A positive number denotes time zones west of the Greenwich meridian. A negative number denotes time zones east of the Greenwich meridian. 5
DDD Daylight saving time (DST) zone identifier. This must be three characters, must begin with a letter, and can contain spaces. EDT
sm Starting month (1 to 12) of DST 4
sw Starting week (-4 to 4) of DST 1
sd Starting day of DST: 0 to 6 if sw is not zero; 1 to 31 if sw is zero 0
st Starting time (in seconds) of DST 3600
em Ending month (1 to 12) of DST 10
ew Ending week (-4 to 4) of DST -1
ed Ending day of DST: 0 to 6 if ew is not zero; 1 to 31 if ew is zero 0
et Ending time (in seconds) of DST 7200
shift Amount of time change (in seconds) 3600

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