UT"
is an abbreviation for Universal Time, a time standard commonly used
by astronomers. Observers of comets or meteor showers typically convert
their time of observation to UT and then submit their observations
to various organizations. These organizations can then compare observations
by people from different states or countries to properly study the
behaviour of a comet or a meteor shower.
The Comets and Meteor Showers web site
is a tool frequently used by amateur and professional astronomers
and therefore, whenever possible, times are given in UT. For non-astronomers,
conversion is fairly easy using the table below. All you need to know
is your time zone. If your state or country enforces daylight savings
time you will need to add an additional hour to the times below.
See also Local
Time
| Standard Time Zones |
| Time Zone |
Take UT and
add the following |
International Date Line East (IDLE)
New Zealand Standard Time (NZST)
New Zealand Time (NZT) |
+12 hours |
Guam Standard Time (GST)
East Australian Standard Time (EAST) |
+10 hours |
| Japan Standard Time (JST) |
+9 hours |
| China Coast Time (CCT) |
+8 hours |
| West Australian Standard Time (WAST) |
+7 hours |
| India Standard Time (IST) |
+5.5 hours |
| Russian Zone 3 |
+4 hours |
Baghdad Time (BT)
Russian Zone 2 |
+3 hours |
Eastern European Time (EET)
Russian Zone 1 |
+2 hours |
Central European Time (CET)
Middle European Time (MET)
Swedish Winter Time (SWT) |
+1 hours |
Greenwich Mean Time (GMT)
Universal Time (UT)
Western European Time (WET) |
0 hours |
| West African Time (WAT) |
-1 hours |
| Atlantic Standard Time (AST) |
-4 hours |
| Eastern Standard Time (EST) |
-5 hours |
| Central Standard Time (CST) |
-6 hours |
| Mountain Standard Time (MST) |
-7 hours |
| Pacific Standard Time (PST) |
-8 hours |
| Alaskan Standard Time (AkST) |
-9 hours |
| Hawaiian Standard Time (HST) |
-10 hours |
| International Date Line West (IDLW) |
-12 hours |
|
|
