User Manual for Lunar Calendars and Eclipse Finder The Solar Eclipse of 1999-08-11 CE

As a second example of an eclipse search, consider the eclipse which occurred over Europe on 1999-08-11 CE. Set the time to GMT. Enter "1999-08-10 CE" (one day before) in the Date/time window and click on Convert. Then select next solar eclipse and click on Search to obtain:

This solar eclipse occurs just five minutes prior to the exact time of the dark moon. Here are the log entries for the eclipse and for the dark moon:

Search for next solar eclipse. 1999-08-11 CE 11:03 (Greenwich; local = GMT) ARC=4697-06-29 MP=102-25-06-01 LLT=098-05-01-1 MMG=1-94-03-30 HLW=4999-05-4-7 Dark moon, illum. = 0.0%, lunat. and age = [-6] 29 days, 8 hrs, 39 mins (100.0%). Central total solar eclipse, lunation number = -5, saros number = 145. Search for next dark moon. 1999-08-11 CE 11:08 (Greenwich; local = GMT) ARC=4697-06-29 MP=102-25-06-01 LLT=098-05-01-1 MMG=1-94-03-30 HLW=4999-05-4-7 Dark moon, illum. = 0.0%, lunat. and age = [-5] 0 days, 0 hrs, 0 mins (0.0%).

Thus although the number of the lunation in which the eclipse occurs is -6, the number of the lunation whose beginning is marked by the associated dark moon is -5. The lunation number of an eclipse is the lunation number of the dark moon or full moon nearest to that eclipse (usually less than 20 minutes from it), so in this case the lunation number of the eclipse is -5 even though it occurs within lunation number -6.

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