When downloading Facebook feed data in JSON, I encountered dates written likes this: 2012-07-06T07:54:56+0000. This format is specified by ISO 8601. ISO 8601 is a standard that provides an unambiguous representation of dates and times. Basically, it represents 07:54:56 am July 6, 2012 GMT (Greenwich Mean Time).

California, during the summer, is in Pacific Daylight Time (PDT), which is 7 hours before GMT. When daylight savings is over, California is in Pacific Standard Time (PST), which is 8 hours before GMT.

Thus, 2012-07-06T07:54:56+0000 in California was 12:54:56 am, July 6, 2012.