Possible Clues:

• Indicator of time
• Timekeeper than can only be used in daylight hours
• Times given by this paper put back
• Timekeeper used during daylight hours
• Solar timepiece
• Times can be read on this, after another paper's put back
• Clock put back by star
• Heard boy set up device useless at night-time
• Try to contact newspaper first - it'll tell you the time
• On the face of it, it makes light of the time