“…Though the daytime observation of the O( 1 D) 630.0 nm was made first by Noxon and Goody as early as 1962, not many studies focused on this aspect in the later years (Noxon and Goody, 1962). However, a significant amount of work in this area of research has been done in India and over other latitudes during last two decade (Desai et al, 1979;Sivjee et al, 1980;Hernandez, 1982;Rees and Greenway, 1983;Narayanan et al, 1989;Biondi et al, 1995;Meriwether et al, 1986;Sridharan et al, 1991Sridharan et al, , 1994Sridharan et al, , 1998Sekar et al, 1993;Conde and Smith, 1997;Slanger et al, 2003;Zhang and Shepherd, 2004).…”