On the 23rd of April there were excellent 
  conditions towards SE Asia on the 60 mb. Two unidentified stations keep 
  bugging me:
   
  1. 4844.97 1700-1900 unid with powerful signal. Px much like 
  AIR, but don't think it was one of theirs. No AIR news. Commercials. Radio 
  Theatre. Local music. Time pips on the hour (not on the half hour). This 
  should indicate Sri Lanka. Sinhala Commercial Service from 4870? Might be 24 h 
  as was still on after 1900.