OLGA
Professional program for horary astrologers. Casts the chart and makes analysis of aspects, essential dignities, antiscia, arabian parts and much more...
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Online Ephemeris
Interactive online ephemeris, with rich events filtering. Includes combustions, ingressions of planets into signs, statuons and aspects. Contains data for 300 years.
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Daylight saving time history
Interactive online table which shows how GMT offset was changing over time in a chosen city. Check this table before casting a chart.
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