Date, UTC to JD, UTC:              http://www.onlineconversion.com/Julian_date.htm

JD, UTC to BJD, TDB:               http://astroutils.astronomy.ohio-state.edu/time/index.html

NASA Exoplanet Archive:          https://exoplanetarchive.ipac.caltech.edu/

     Transit service:                   https://exoplanetarchive.ipac.caltech.edu/cgi-bin/TransitView/nph-visibletbls?dataset=transits

Exoplanet Transit Database:      http://var2.astro.cz/ETD/predictions.php
Exoplanet Information:             htte://exoplanets.org

Limb Darkening:                       http://astroutils.astronomy.ohio-state.edu/exofast/limbdark.shtml

Worksheet:                              http://astrodennis.com

Dimension 4 Time Sync:            http://www.thinkman.com/dimension4/download.htm