security blanket. 1  a small blanket or other soft cloth, as clutched or stroked by a child for the feeling of comfort and security it affords. 2  anything that gives a person a sense of safety or freedom from anxiety.
PST and EST are time zones in North America. PST is Pacific Standard Time and EST is Eastern Standard Time. There is a difference of 3 hours between these time zones. The Timezone Offsets of PST and EST are -8 and -5 respectively. This means that PST is eight hours behind Coordinated Universal Time (UTC), while EST is only five hours behind.
The difference between EST and GMT is -5 hours, so if it is 5.00pm EST is will be 10.00pm GMT. However you could have also meant Eastern Standard Time by using EST.