Please note the date and time for which the map is valid (see text in lower left corner).
The notation "12Z" means "12:00 Zulu Time" or noon Greenwich Mean Time (GMT)
and "00Z" means "00:00 Zulu Time" or midnight GMT. Zulu time is also called "Universal Time Coordinated" (UTC
), which is also the same as GMT.
For the Bay Area:
Standard Time (Fall/Winter)
— Subtract 8 hours from the UTC time 00Z = 4:00PM 12Z = 4:00AM
Daylight Savings Time (Spring/Summer)
* — Subtract 7 hours from the UTC time 00Z = 5:00PM 12Z = 5:00AM A conversion table for the Zulu or UTC can be found at http://www.hpc.ncep.noaa.gov/html/faq.shtml#UTC
* Note: In 2007, Daylight Savings time started and ended a month