How to use the numbers at the top of the plots: add the number corresponding to your time zone to your local time in order to arrive at GMT. For example, if it is 7 am Eastern Standard Time (in the U.S.), then 7 + 5 = 12 noon GMT. 


       Here is an explanation of the time zone abbreviations used internationally and locally: 
GMT - Greenwich Mean Time
UTC - Universal Time Coordinated (the same as GMT) 

US and Canada
AST Atlantic Standard Time (GMT -4 hours)
ADT Atlantic Daylight Saving Time (GMT -3 hours)
EST Eastern Standard Time (GMT -5 hours)
EDT Eastern Daylight Saving Time (GMT -4 hours)
CST Central Standard Time (GMT -6 hours)
CDT Central Daylight Saving Time (GMT -5 hours)
MST Mountain Standard Time (GMT -7 hours)
MDT Mountain Daylight Saving Time (GMT -6 hours)
PST Pacific Standard Time (GMT -8 hours)
PDT Pacific Daylight Saving Time (GMT -7 hours)
AKST Alaska Standard Time (GMT -9 hours)
AKDT Alaska Daylight Saving Time (GMT -8 hours)
HST Hawaiian Standard Time (GMT -10 hours)
(Hawaii doesn't adjust for Daylight Saving) 

Europe 
BST British Summer Time (GMT +1 hour)
IST Irish Summer Time (GMT +1 hour)
CET Central Europe Time (GMT +1 hour)
CEST Central Europe Summer Time (GMT +2 hours)
EET Eastern Europe Time (GMT +2 hours)
EEST Eastern Europe Summer Time (GMT +3 hours)


Australia
AEST Australian Eastern Standard Time (GMT +10 hours)


Standard Time
AST EST CST MST PST AKST HST GMT CET EET
-4 -5 -6 -7 -8 -9 -10 0 +1 +2
8am 7am 6am 5am 4am 3am 2am 12pm 1pm 2pm
9am 8am 7am 6am 5am 4am 3am 1pm 2pm 3pm
10am 9am 8am 7am 6am 5am 4am 2pm 3pm 4pm
11am 10am 9am 8am 7am 6am 5am 3pm 4pm 5pm
12pm 11am 10am 9am 8am 7am 6am 4pm 5pm 6pm
1pm 12pm 11am 10am 9am 8am 7am 5pm 6pm 7pm
2pm 1pm 12pm 11am 10am 9am 8am 6pm 7pm 8pm
3pm 2pm 1pm 12pm 11am 10am 9am 7pm 8pm 9pm
4pm 3pm 2pm 1pm 12pm 11am 10am 8pm 9pm 10pm
5pm 4pm 3pm 2pm 1pm 12pm 11am 9pm 10pm 11pm
6pm 5pm 4pm 3pm 2pm 1pm 12pm 10pm 11pm 12am
7pm 6pm 5pm 4pm 3pm 2pm 1pm 11pm 12am 1am
8pm 7pm 6pm 5pm 4pm 3pm 2pm 12am 1am 2am
9pm 8pm 7pm 6pm 5pm 4pm 3pm 1am 2am 3am
10pm 9pm 8pm 7pm 6pm 5pm 4pm 2am 3am 4am
11pm 10pm 9pm 8pm 7pm 6pm 5pm 3am 4am 5am
12am 11pm 10pm 9pm 8pm 7pm 6pm 4am 5am 6am
1am 12am 11pm 10pm 9pm 8pm 7pm 5am 6am 7am
2am 1am 12am 11pm 10pm 9pm 8pm 6am 7am 8am
3am 2am 1am 12am 11pm 10pm 9pm 7am 8am 9am
4am 3am 2am 1am 12am 11pm 10pm 8am 9am 10am
5am 4am 3am 2am 1am 12am 11pm 9am 10am 11am
6am 5am 4am 3am 2am 1am 12am 10am 11am 12pm
7am 6am 5am 4am 3am 2am 1am 11am 12pm 1pm
     
Daylight Savings Time (summer)
ADT EDT CDT MDT PDT AKDT HST GMT BST IST CEST EEST
-3 -4 -5 -6 -7 -8 -10 0 +1 +1 +2 +3
9am 8am 7am 6am 5am 4am 2am 12pm 1pm 1pm 2pm 4pm
10am 9am 8am 7am 6am 5am 3am 1pm 2pm 2pm 3pm 5pm
11am 10am 9am 8am 7am 6am 4am 2pm 3pm 3pm 4pm 6pm
12pm 11am 10am 9am 8am 7am 5am 3pm 4pm 4pm 5pm 7pm
1pm 12pm 11am 10am 9am 8am 6am 4pm 5pm 5pm 6pm 8pm
2pm 1pm 12pm 11am 10am 9am 7am 5pm 6pm 6pm 7pm 9pm
3pm 2pm 1pm 12pm 11am 10am 8am 6pm 7pm 7pm 8pm 10pm
4pm 3pm 2pm 1pm 12pm 11am 9am 7pm 8pm 8pm 9pm 11pm
5pm 4pm 3pm 2pm 1pm 12pm 10am 8pm 9pm 9pm 10pm 12am
6pm 5pm 4pm 3pm 2pm 1pm 11am 9pm 10pm 10pm 11pm 1am
7pm 6pm 5pm 4pm 3pm 2pm 12pm 10pm 11pm 11pm 12am 2am
8pm 7pm 6pm 5pm 4pm 3pm 1pm 11pm 12am 12am 1am 3am
9pm 8pm 7pm 6pm 5pm 4pm 2pm 12am 1am 1am 2am 4am
10pm 9pm 8pm 7pm 6pm 5pm 3pm 1am 2am 2am 3am 5am
11pm 10pm 9pm 8pm 7pm 6pm 4pm 2am 3am 3am 4am 6am
12am 11pm 10pm 9pm 8pm 7pm 5pm 3am 4am 4am 5am 7am
1am 12am 11pm 10pm 9pm 8pm 6pm 4am 5am 5am 6am 8am
2am 1am 12am 11pm 10pm 9pm 7pm 5am 6am 6am 7am 9am
3am 2am 1am 12am 11pm 10pm 8pm 6am 7am 7am 8am 10am
4am 3am 2am 1am 12am 11pm 9pm 7am 8am 8am 9am 11am
5am 4am 3am 2am 1am 12am 10pm 8am 9am 9am 10am 12pm
6am 5am 4am 3am 2am 1am 11pm 9am 10am 10am 11am 1pm
7am 6am 5am 4am 3am 2am 12am 10am 11am 11am 12pm 2pm
8am 7am 6am 5am 4am 3am 1am 11am 12pm 12pm 1pm 3pm