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Dr. Neil Clark Warren, Founder
Dr. Warren is a clinical psychologist and author of eight books on love, marriage and emotional health. During 35 years of counseling thousands of married couples, Dr. Warren observed a set of characteristics that seemed to be present in all successful relationships. He called them the 29 Dimensions of Compatibility. After extensive research involving thousands of married couples, Dr. Warren confirmed that these dimensions were indeed highly predictive of relationship success and could be used to match singles. Ten years later, eHarmony's compatibility matching is responsible for nearly 4% of U. S. marriages.*
*2012 U. S. survey conducted for eHarmony by Harris Interactive®
eHarmony - #1 Trusted Online Dating Site for Singles
eHarmony is the first service within the online dating industry to use a scientific approach to matching highly compatible singles. eHarmony's matching is based on using its 29 DIMENSIONS® model to match couples based on features of compatibility found in thousands of successful relationships.
eHarmony is committed to helping singles find love every day . and with over 20 million registered online users, we are confident in our ability to do so. The eHarmony Compatibility Matching System® matches single women and men based on 29 Dimensions® of Compatibility for lasting and fulfilling relationships.
Traditional Internet dating can be challenging for those singles looking for love that lasts. But eHarmony is not a traditional dating site. Of all the single men or women you may meet online, very few will be compatible with you specifically, and it can be difficult to determine the level of compatibility of a potential partner through methods of conventional dating services – browsing classified ads, online personals, or viewing profile photos. Our Compatibility Matching System does the work for you by narrowing the field from thousands of single prospects to match you with a select group of compatible matches with whom you can build a quality relationship.
4 Easy Steps to Find the Right Match.
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Nearly 4% of U. S. Newlyweds Can't Be Wrong
eHarmony is different than other online dating websites and services, and we believe our success speaks for itself. On average, 438 people get married every day in the United States because of eHarmony; that accounts for nearly 4% of new U. S. marriages.* At eHarmony, we believe you deserve to find love – true love that comes with a lasting relationship. Because of this, we are committed to assisting singles everywhere in their search to find love and romantic fulfillment.
*2012 U. S. survey conducted for eHarmony by Harris Interactive® online, very few will be compatible with you specifically, and it can be difficult to determine the level of compatibility of a potential partner through methods of conventional dating services – browsing classified ads, online personals, or viewing profile photos. Our Compatibility Matching System does the work for you by narrowing the field from thousands of single prospects to match you with a select group of compatible matches with whom you can build a quality relationship.
Meet People of all Ages, Races, and Religions on eHarmony
With over 20 million registered users, the eHarmony member base is an ethnically, racially, and religiously diverse group of individuals of all ages – all of whom are looking to find someone special. Amongst our most popular demographics are: Christian Singles. Jewish Singles. Black Singles. Hispanic Singles. Asian Singles. 30s Singles and Senior Singles. We understand it can be difficult to find a mate with whom you share a similar background, goals, or beliefs, and regardless of who you may be looking for, eHarmony wants to help you find the love of your life.
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Unlike traditional dating websites, eHarmony matches compatible men and women based on 29 Dimensions of Compatibility that are predictors of long-term relationship success. Determining compatibility through conventional dating methods could take months, or even years, of interaction between you and your potential partner. At eHarmony, we deliver more than personal ads . We are committed to matching you with truly compatible men or women in order to provide you with the best online dating and relationship experience possible. This is one of the many reasons why eHarmony is now the #1 Trusted Online Dating Site for American singles.
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We at eHarmony want you to find love and romance and to make it last. To assist you in this quest, we offer free dating advice at: eH Advice. Meet people in our on line dating community, utilize our Date Planner, and receive advice from our relationship experts.
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If you've met someone special through eHarmony, please contact us and let us know how it all started and how the relationship is progressing. Thousands of eHarmony couples have shared their stories with us. To learn more about eHarmony success stories, simply click the link below.
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Success Stories - Telegraph Dating members share their experiences
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Emma, 2014-04-24
Thank you. I am very happy to report that I have found the most wonderful man on your site. We have so much in common and are busy planning our future together.
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Month
A month is a unit of time. used with calendars. which was first used and invented in Mesopotamia. as a natural period related to the motion of the Moon ; month and Moon are cognates. The traditional concept arose with the cycle of moon phases ; such months (lunations ) are synodic months and last approximately 29.53 days. From excavated tally sticks. researchers have deduced that people counted days in relation to the Moon's phases as early as the Paleolithic age. Synodic months, based on the Moon's orbital period with respect to the Earth-Sun line, are still the basis of many calendars today, and are used to divide the year .
Contents
Types of months in astronomy [ edit ]
The following types of months are mainly of significance in astronomy, most of them (but not the distinction between sidereal and tropical months) first recognized in Babylonian lunar astronomy .
The sidereal month is defined as the Moon's orbital period in a non-rotating frame of reference (which on average is equal to its rotation period in the same frame). It is about 27.32166 days (27 days, 7 hours, 43 minutes, 11.6 seconds). The exact duration of the orbital period cannot be easily determined, because the 'non-rotating frame of reference' cannot be observed directly. However, it is approximately equal to the time it takes the Moon to pass twice a "fixed" star (different stars give different results because all have proper motions and are not really fixed in position).
A synodic month is the most familiar lunar cycle, defined as the time interval between two consecutive occurrences of a particular phase (such as new moon or full moon) as seen by an observer on Earth. The mean length of the synodic month is 29.53059 days (29 days, 12 hours, 44 minutes, 2.8 seconds). Due to the eccentric orbit of the lunar orbit around Earth (and to a lesser degree, the Earth’s elliptical orbit around the Sun), the length of a synodic month can vary by up to seven hours.
The tropical month is the average time for the Moon to pass twice through the same equinox point of the sky. It is 27.32158 days, very slightly shorter than the sidereal month (27.32166) days, because of precession of the equinoxes. Unlike the sidereal month, it can be measured precisely.
An anomalistic month is the average time the Moon takes to go from perigee to perigee - the point in the Moon's orbit when it is closest to Earth. An anomalistic month is about 27.55455 days on average.
The draconic month or nodal month is the period in which the Moon returns to the same node of its orbit; the nodes are the two points where the Moon's orbit crosses the plane of the Earth's orbit. Its duration is about 27.21222 days on average.
A synodic month is longer than a sidereal month because the Earth-Moon system is orbiting the Sun in the same direction as the Moon is orbiting the Earth. Therefore, the Sun appears to move with respect to the stars, and it takes about 2.2 days longer for the Moon to return to the same apparent position with respect to the Sun.
An anomalistic month is longer than a sidereal month because the perigee moves in the same direction as the Moon is orbiting the Earth, one revolution in nine years. Therefore, the Moon takes a little longer to return to perigee than to return to the same star.
A draconic month is shorter than a sidereal month because the nodes move in the opposite direction as the Moon is orbiting the Earth, one revolution in 18 years. Therefore, the Moon returns to the same node slightly earlier than it returns to the same star.
Calendrical consequences [ edit ]
At the simplest level, most well-known lunar calendars are based on the initial approximation that 2 lunations last 59 days: a 30 day full month followed by a 29 day hollow month — but this is only roughly accurate, and eventually needs correction by using larger cycles, or the equivalent of leap days. Additionally, the synodic month does not fit easily into the year. which makes accurate, rule-based lunisolar calendars complicated. The most common solution to this problem is the Metonic cycle. which takes advantage of the fact that 235 lunations are approximately 19 tropical years (which add up to not quite 6940 days). However, a Metonic calendar will drift against the seasons by about 1 day every 200 years. Metonic calendars include the calendar used in the Antikythera Mechanism about 2000 years ago, and the Hebrew calendar .
The complexity required in an accurate lunisolar calendar may explain why solar calendars. with months which no longer relate to the phase of the Moon, but are based only on the motion of the Sun against the sky, have generally replaced lunar calendars for civil use in most societies.
Months in various calendars [ edit ]
Beginning of the lunar month [ edit ]
However, the motion of the Moon in its orbit is very complicated and its period is not constant. The date and time of this actual observation depends on the exact geographical longitude as well as latitude, atmospheric conditions, the visual acuity of the observers, etc. Therefore the beginning and lengths of months defined by observation cannot be accurately predicted.
While some like the Jewish Karaites still rely on actual moon observations, most people use the Gregorian solar calendar .
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