Possible Clues:

• Calm sea late in the day?
• Of late one may get to die after it happens
• Occurrence that is taking place about onset of dusk
• Of late the ebb and flow is not so odd
• A grim hero curiously portrayed in sacred symbol
• Light now failing, happening before team loses opener
• Still reportedly bound together at the end of the day
• Calm water at close of day?
• Close of day happening with clue incomplete
• Of late there's this regular flow of bird song