DIN-RAINDINRAIN, lit. (din + rain) day and night, is the title (dinraini) of a single 4stanza hymn by Guru Arjan Dev in the Majh measure (GG, 13637). The composition evidently follows the prosodic vogue of inscribing verses to kalkrama (process of time) embracing forms such as baramaha (twelve months of the year), thitf (lunardates) and var (days of the week). Otherwise, the contents of this hymn are in harmony with the tenor of the entire text, i.e. praise of, surrender to, and love of God, the Ultimate Reality. Writing in the first person and in conversational style mixed with soliloquy. Guru Arjan expresses the soul`s yearning for reunion with the Lord and, besides panegyrizing the Timeless, Merciful, True Creator. He also gives homage to those who day and night remember and serve Him. dinu rainiji prabh kauri sevade tin kai ad balihar I am a hundred times sacrifice unto those who serve the Lord day and night; inu rainijisu na visarai so haria hovai jantu He who does not forget Him during day or night remains evergreen; sarab kaliana titu dini hari pars! gur ke pau The day during which one worships at he feet of Godguru brings total liberation.Besides using dinrain as the title of this hymn, the term frequently appears in gurbani impressing upon the devotees the need and significance of remembering the Name (nam) constantly during day and night. Other variations on the term are rainidinasu, dinrati, nisidinu, ratdinant and plain dinu ar rati. M.G.S.