Below is the conversion table between solar longitude and “normal” dates for the period 2014-2019. All solar longitudes refer to equinox J2000 and have three significant decimals. The longitudes are given in 2-hour steps for each day. This table has been generated by the application SollongCalc created by IMO Member Kristina Veljkovic (Department of Probability and Statistics, Faculty of Mathematics, University of Belgrade, Belgrade, Serbia).
To generate solar longitudes for any date, please go to SollongCalc.