Sky Maps: Your Sky, Heavens-above
Longitude and Latitude:
  Martinsville, NJ: LAT: 40° 35' 00 N:  LON 74° 32 37 W - EST=UTC-5, EDT=UTC-4
        Boston, MA: LAT: 42° 21'24" N   LON: 71° 3'24"W
      Homewood, CA: LAT: 39° 5' N       LON: 120° 10' PST=UTC-8, PDT=UTC-7
         Davis, CA: Lat: 38° 33' 17" N  Lon: 121° 45' 45" W

Universal Time (UT) Table (UT is the time in the Greenwich time zone which used to be called Grenwich Mean Time)

UT	0	3	6	9	12	15	18	21
EST	7PM	10PM	1AM	4AM	7AM	10AM	1PM	4PM
PST	4PM	7PM	10PM	1AM	4AM	7AM	10AM	1PM
PDT	5PM	8PM	11PM	2AM	5AM	8AM	11AM	2PM