Below is a list of time zones and their modifier for summer and winter time.
If you live in a location that does not use Daylight Savings, then you will always use the Winter time table.
Daylight Savings time (ie summer time) begins in the United States on the first Sunday in April and ends on the last Sunday in October.
Daylight Savings time (ie summer time) begins in the UK/EU on the last Sunday in March and ends on the last Sunday in October
Summer Time
HADT -9
AKDT -8
PDT -7
MDT -6
CDT -5
EDT -4
ADT -3
NDT -2.5
GMT 0
BST +1
IST +1
WEST +1
CEST +2
EEST +3
Winter time
HAST -10
AKST -9
PST -8
MST -7
CST -6
EST -5
AST -4
NST -3.5
GMT 0
CET +1
EET +2
Not sure of your time zone abbreviation?
Here's a standard to summertime abbrev table for the above.
HAST = HADT
AKST = AKDT
PST = PDT
MST = MDT
CST = CDT
EST = EDT
AST = ADT
NST = NDT
CET = CEST
EET = EEST
BST = British Summertime
IST = Irish Summertime
WEST = Western EU Summertime
Time Zone Abbreviations
Australia and New Zealand and Brazil
(remember their seasons are backwards to the Northern Hemisphere)
Summer Time
Brazil -2
GMT 0
CXT +7
WST +9
CST +10:30
EST +11
NFT +11:30
Winter time
Brazil -3
GMT 0
CXT +7
WST +8
CST +9:30
EST +10
NFT +11:30
This should hopefully solve any problems if someone doens't know the time differance between where they are and the event timezone posted for an event.
If I have missed any timezones, please reply and I'll add them in.