Possible Clues:

• Sailor's omen
• Good evening omen, it's said
• Morning warning for sailors
• Sailors' morning warning
• '...... at night, shephard's delight'
• '... ... at night, shepherd's delight'
• Heavenly sight delightful to shepherds
• ` `... ... sky at night, shepard's delight' '
• ` `... ... at night, shepherd's delight' '
• A sad one from Ultravox