Greenwich Interval: An interval referred to the transit of the Moon over the meridian of Greenwich, as distinguished from the local interval which is referred to the Moon's transit over the local meridian. The relation in hours between Greenwich and local intervals may be expressed by the formula: Greenwich interval = local interval + 0.069L where L is the west longitude of the local meridian in degrees. For east longitude, L is to be considered negative.

 

Related Words

Greenwich Interval: An interval referred to the transit of the Moon over the meridian of Greenwich, as distinguished from the local interval which is referred to the Moon's transit over the local meridian. The . . . View Full Definition

Lunar Interval: The difference in time between the transit of the Moon over the meridian of Greenwich and a local meridian. The average value of this interval, expressed in hours, is 0.069 L, where L is the . . . View Full Definition

Lunitidal Interval: The interval between the Moon's transit (upper or lower) over the local or Greenwich meridian and the following high or low water. The average of all high water intervals for all phases of t . . . View Full Definition

Lunicurrent Interval: The interval between the Moon's transit (upper or lower) over the local or Greenwich meridian and a specified phase of the tidal current following the transit. Examples are strength of flood . . . View Full Definition