Ephemeris and Moon Aspect Calendar

http://www.khaldea.com/kc2016/kc2016pst.html

Online Ephemeris 1900-2100

http://www.findyourfate.com/astrology/ephemeris/ephemeris.html

Trigonometry for astrology

https://www.easycalculation.com/formulas/angle-conversion-all.html