What is the Eastern Time Zone? The Eastern Timezone is an area 5 hours behind Greenwich Mean Time ( GMT-5 ) during the winter months (referred to as EST) and 4 hours behind Greenwich Mean Time ( GMT-4 ) during the summer months (referred to as EDT). From 2 A.M. on the second Sunday in March to 2 A.M. on the first Sunday in November, Daylight Saving Time is in effect.
WHAT ARE SINUSES? Sinuses are air pockets that are located within the bones of the skull and face and are connected to your nasal passages by small tubes or channels, the osteomeatal complex. These channels permit air to flow from the nose into the sinuses and allow drainage of mucous from each sinus into the nose.
There are several of these joints in the skull, examples include: Coronal Suture (between frontal and parietal bones); Lamboidal Suture (between the parietal and occipital bones); and Sagittal Suture (between the two parietal bones). These joints hold the bones of the skull together. Floor of the cranium, inferior to the frontal bone and anterior to the sphenoid. Non-technically: Centre of the face, behind the nose. Forms part of the nasal cavity and the orbits.