May 20, 2012 solar eclipse in USA will be visible all over America except few cities. This is Pakshik Surya Grahan (Partial Solar Eclipse) occurs at sunset time in USA.
Here is the detailed information on timings of solar eclipse 20 May 2012 in different cities of USA as per local time: Atlanta, GA, Austin, TX, Baton Rouge, LA, Buffalo, NY, Boston, MA, Chicago, IL, Cincinnati, OH, Cleveland, OH, Columbus, OH, Dallas, TX, Denver, CO, Detroit, MI, El Paso, TX, Hartford, CT, Honolulu, HI, Houston, TX, Indianapolis, IN, Kansas City, MO, Los Angeles, CA, Louisville, KY, Memphis, TN, Miami, FL, Milwaukee, WI, Minneapolis, MN, Nashville, TN, New Orleans, LA, New York, NY, Oklahoma City, OK, Philadelphia, PA , Phoenix, AZ, Pittsburgh, PA, Portland, OR, Providence, RI, Richmond, VA, Rochester, NY, Sacramento, CA , St. Louis, MO, St. Petersburg, FL, Salt Lake City, UT, San Antonio, TX, San Diego, CA, San Francisco, CA, Seattle, WA, Washington, DC..
Time of Solar Eclipse in Albany, NY on May 20, 2012: Not visible
Time of Solar Eclipse in Atlanta, GA on May 20, 2012 (in local time)
Partial Eclipse begins at 7.28 PM
Maximum Solar Eclipse at 7.32 PM
Partial Eclipse ends at 7.32 PM
Time of Solar Eclipse in Austin, TX on May 20, 2012 (in local time)
Partial Eclipse begins at 6.34 PM
Maximum Solar Eclipse at 7.18 PM
Partial Eclipse ends at 7.18 PM
Time of Solar Eclipse in Baltimore, MD on May 20, 2012: Not visible
Time of Solar Eclipse in Baton Rouge, LA on May 20, 2012 (in local time)
Partial Eclipse begins at 6.33 PM
Maximum Solar Eclipse at 6.52 PM
Partial Eclipse ends at 6.52 PM
Time of Solar Eclipse in Boston, MA on May 20, 2012: Not visible
Time of Solar Eclipse in Buffalo, NY on May 20, 2012 (in local time)
Partial Eclipse begins at 7.19 PM
Maximum Solar Eclipse at 7.33 PM
Partial Eclipse ends at 7.33 PM
Time of Solar Eclipse in Chicago, IL on May 20, 2012 (in local time)
Partial Eclipse begins at 6.22 PM
Maximum Solar Eclipse at 7.06 PM
Partial Eclipse ends at 7.06 PM
Time of Solar Eclipse in Cincinnati, OH on May 20, 2012 (in local time)
Partial Eclipse begins at 7.24 PM
Maximum Solar Eclipse at 7.45 PM
Partial Eclipse ends at 7.45 PM
Time of Solar Eclipse in Cleveland, OH on May 20, 2012 (in local time)
Partial Eclipse begins at 7.21 PM
Maximum Solar Eclipse at 7.41 PM
Partial Eclipse ends at 7.41 PM
Time of Solar Eclipse in Columbus, OH on May 20, 2012 (in local time)
Partial Eclipse begins at 7.23 PM
Maximum Solar Eclipse at 7.42 PM
Partial Eclipse ends at 7.42 PM
Time of Solar Eclipse in Dallas, TX on May 20, 2012 (in local time)
Partial Eclipse begins at 6.31 PM
Maximum Solar Eclipse at 7.20 PM
Partial Eclipse ends at 7.20 PM
Time of Solar Eclipse in Denver, CO on May 20, 2012 (in local time)
Partial Eclipse begins at 5.22 PM
Maximum Solar Eclipse at 6.29 PM
Partial Eclipse ends at 7.09 PM
Time of Solar Eclipse in Detroit, MI on May 20, 2012 (in local time)
Partial Eclipse begins at 7.21 PM
Maximum Solar Eclipse at 7.49 PM
Partial Eclipse ends at 7.49 PM
Time of Solar Eclipse in El Paso, TX on May 20, 2012 (in local time)
Partial Eclipse begins at 5.32 PM
Maximum Solar Eclipse at 6.39 PM
Partial Eclipse ends at 6.56 PM
Time of Solar Eclipse in Hartford, CT on May 20, 2012 (in local time) : Not visible
Time of Solar Eclipse in Honolulu, HI on May 20, 2012 (in local time)
Partial Eclipse begins at 2.03 PM
Maximum Solar Eclipse at 3.11 PM
Partial Eclipse ends at 4.12 PM
Time of Solar Eclipse in Houston, TX on May 20, 2012 (in local time)
Partial Eclipse begins at 6.35 PM
Maximum Solar Eclipse at 7.08 PM
Partial Eclipse ends at 7.08 PM
Time of Solar Eclipse in Indianapolis, IN on May 20, 2012 (in local time)
Partial Eclipse begins at 7.23 PM
Maximum Solar Eclipse at 7.54 PM
Partial Eclipse ends at 7.54 PM
Time of Solar Eclipse in Kansas City, MO on May 20, 2012 (in local time)
Partial Eclipse begins at 6.25 PM
Maximum Solar Eclipse at 7.26 PM
Partial Eclipse ends at 7.26 PM
Time of Solar Eclipse in Los Angeles, CA on May 20, 2012 (in local time)
Partial Eclipse begins at 4.24 PM
Maximum Solar Eclipse at 5.38 PM
Partial Eclipse ends at 6.42 PM
Time of Solar Eclipse in Louisville, KY on May 20, 2012 (in local time)
Partial Eclipse begins at 7.25 PM
Maximum Solar Eclipse at 7.48 PM
Partial Eclipse ends at 7.48 PM
Time of Solar Eclipse in Memphis, TN on May 20, 2012 (in local time)
Partial Eclipse begins at 6.28 PM
Maximum Solar Eclipse at 6.58 PM
Partial Eclipse ends at 6.58 PM
Time of Solar Eclipse in Miami, FL on May 20, 2012 (in local time) : Solar Eclipse is not visible in Miami
Time of Solar Eclipse in Milwaukee, WI on May 20, 2012 (in local time)
Partial Eclipse begins at 6.21 PM
Maximum Solar Eclipse at 7.10 PM
Partial Eclipse ends at 7.10 PM
Time of Solar Eclipse in Minneapolis, MN on May 20, 2012 (in local time)
Partial Eclipse begins at 6.19 PM
Maximum Solar Eclipse at 7.19 PM
Partial Eclipse ends at 7.37 PM
Time of Solar Eclipse in Nashville, TN on May 20, 2012 (in local time)
Partial Eclipse begins at 6.27 PM
Maximum Solar Eclipse at 6.47 PM
Partial Eclipse ends at 6.47 PM
Time of Solar Eclipse in New Orleans, LA on May 20, 2012 (in local time)
Partial Eclipse begins at 6.33 PM
Maximum Solar Eclipse at 6.47 PM
Partial Eclipse ends at 6.47 PM
Time of Solar Eclipse in New York, NY on May 20, 2012 (in local time): Solar Eclipse will not be visible in New York on May 20, 2012
Time of Solar Eclipse in Oklahoma City, OK on May 20, 2012 (in local time)
Partial Eclipse begins at 6.29 PM
Maximum Solar Eclipse at 7.29 PM
Partial Eclipse ends at 7.29 PM
Time of Solar Eclipse in Philadelphia, PA on May 20, 2012: Solar eclipse is not visible in Philadelphia
Time of Solar Eclipse in Phoenix, AZ on May 20, 2012 (in local time)
Partial Eclipse begins at 5.28 PM
Maximum Solar Eclipse at 6.39 PM
Partial Eclipse ends at 7.22 PM
Time of Solar Eclipse in Pittsburgh, PA on May 20, 2012 (in local time)
Partial Eclipse begins at 7.22 PM
Maximum Solar Eclipse at 7.31 PM
Partial Eclipse ends at 7.31 PM
Time of Solar Eclipse in Portland, OR on May 20, 2012 (in local time)
Partial Eclipse begins at 4.04 PM
Maximum Solar Eclipse at 5.21 PM
Partial Eclipse ends at 6.29 PM
Time of Solar Eclipse in Providence, RI on May 20, 2012: Solar eclipse will not be visible in Providence
Time of Solar Eclipse in Richmond, VA on May 20, 2012: Solar eclipse will not be visible in Richmond
Time of Solar Eclipse in Rochester, NY on May 20, 2012 (in local time)
Partial Eclipse begins at 7.19 PM
Maximum Solar Eclipse at 7.29 PM
Partial Eclipse ends at 7.29 PM
Time of Solar Eclipse in Sacramento, CA on May 20, 2012 (in local time)
Partial Eclipse begins at 4.15 PM
Maximum Solar Eclipse at 5.31 PM
Partial Eclipse ends at 6.39 PM
Time of Solar Eclipse in St. Louis, MO on May 20, 2012 (in local time)
Partial Eclipse begins at 6.25 PM
Maximum Solar Eclipse at 7.07 PM
Partial Eclipse ends at 7.07 PM
Time of Solar Eclipse in St. Petersburg on May 20, 2012: Solar Eclipse is not visible in St. Petersburg
Time of Solar Eclipse in Salt Lake City, UT on May 20, 2012 (in local time)
Partial Eclipse begins at 5.18 PM
Maximum Solar Eclipse at 6.29 PM
Partial Eclipse ends at 7.33 PM
Time of Solar Eclipse in San Antonio, TX on May 20, 2012 (in local time)
Partial Eclipse begins at 6.35 PM
Maximum Solar Eclipse at 7.19 PM
Partial Eclipse ends at 7.19 PM
Time of Solar Eclipse in San Diego, CA on May 20, 2012 (in local time)
Partial Eclipse begins at 4.27 PM
Maximum Solar Eclipse at 5.39 PM
Partial Eclipse ends at 6.41 PM
Time of Solar Eclipse in San Francisco, CA on May 20, 2012 (in local time)
Partial Eclipse begins at 4.15 PM
Maximum Solar Eclipse at 5.32 PM
Partial Eclipse ends at 6.40 PM
Time of Solar Eclipse in Seattle, WA on May 20, 2012 (in local time)
Partial Eclipse begins at 4.01 PM
Maximum Solar Eclipse at 5.17 PM
Partial Eclipse ends at 6.26 PM
Time of Solar Eclipse in Washington, DC on May 20, 2012: Solar eclipse is not visible in Washington, DC
What to do during Solar Eclipse: DOs and DONTs during Surya Grahan
Surya Grahan Astrology Predictions May 2012: Effects of Solar Eclipse on Various Rashis
I believe your eclipse times for St. Louis, MO are one hour off. I think perhaps they fail to account for Daylight Savings Time. The partial eclipse actually begins at 7:25 PM, rather than 6:25 PM. See these references:
http://nightsky.jpl.nasa.gov/event-view.cfm?Event_ID=33505
http://www.asemonline.org/public-outreach-activities/st-charles-county-parks-events
http://eclipse.gsfc.nasa.gov/JSEX/JSEX-USA.html
(St. Louis is 5 hours west of UTC during Daylight Savings Time)
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