The tide or tidal clock by Imex Promotion

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	The Neptune's Tide Clock was first introduced in Europe by Imex Promotion in 1994. We have since become the world leader, offering the largest range with over 30 exclusive models. Our products are used as well by sailors, fishermen, gardeners or astrology enthusiasts and are produced in our 350 square-yard facilities located just next to Versailles. We have since become the world leader, offering the largest range with over 30 exclusive models. Today we ship all over, wherever you have two unequal tides each day. Setting your Tide Clock For the folowing reasons, we fully recommend that you set, once for all, your Neptune's Tide Clock at a Full or New Moon. The sun can alter tide times by up to an hour when the moon is it's first or last quarter. EDUCATIONAL How does a tide clock work ? Tides are caused by many factors, but by far the most influential is the moon's gravitational pull on the ocean. Approximately 71% of the Earth's surface (an area of some 361 million square kilometers) is covered by ocean. It takes the moon an average of 24 hours, 50 minutes and 28 seconds to reappear at the same place in the sky ; during this period most areas in the world have two high tides and two low tides. The tide clock has been specially designed to rotate twice each period (every 12 hours and 25 minutes and 14 seconds) giving you a quick and easy indication of high and low water. The quartz tide clock will always stay synchronized with the moon so please set, once for all, your Neptune's Tide Clock at a Full or New Moon. Tides and Water Levels Tidal Variations - The Influence of Position and Distance Tidal Range Basically, tides are very long-period waves that move through the oceans in response to the forces exerted by the moon and sun. Tides originate in the oceans and progress toward the coastlines where they appear as the regular rise and fall of the sea surface. When the highest part, or crest of the wave reaches a particular location, high tide occurs ; low tide corresponds to the lowest part of the wave, or its trough. The difference in height between the high tide and the low tide is called the tidal range. (see our Tidal Range Indicator) The Moon The average centre-to-centre distance from the Earth to the Moon is 384,403 km, which is about thirty times the diameter of the Earth. The Moon has a diameter slightly more than a quarter of the Earth and slightly smaller than the east-west distance across the United States. This means that the volume of the Moon is about 2 percent that of Earth. The Moon makes a complete orbit around the Earth every 27.3 days, and the periodic variations in the geometry of the Earth-Moon-Sun system are responsible for the lunar phases that repeat every 29.5 days. MOON PHASES For example, particularly large tides are experienced in the Earth's oceans when the Sun and the Moon are lined up with the Earth at new and full phases of the Moon. These are called spring tides (the name is not associated with the season of Spring). The amount of enhancement in Earth's tides is about the same whether the Sun and Moon are lined up on opposite sides of the Earth (full Lunar phase) or on the same side (new Lunar phase). Conversely, when the Moon is at first quarter or last quarter phase (meaning that it is located at right angles to the Earth-Sun line), the Sun and Moon interfere with each other in producing tidal bulges and tides are generally weaker; these are called neap tides. The following figures illustrates spring and neap tides. Once a month, when the moon is closest to the Earth (at perigee), tide-generating forces are higher than usual, producing above-average ranges in the tides : Spring Tides About two weeks later, when the moon is farthest from the Earth (at apogee), the lunar tide-raising force is smaller, and the tidal ranges are less than average.Neap Tides.