IN these days of accurate clocks and watches no one thinks of using a sun dial to tell the time of day. At best such an instrument can be right but four times a year, and in many places it can ...

For a good night of sleep, consider getting your circadian rhythm back in sync with the sun. Here’s how to do it.

And the sun would set at 7:37 p.m. on standard time ... Is it really so difficult to change clocks by one hour twice a year?