Got tired of digital watches and wanted to go back to basics so, I got this. Date, day, time. There is nothing tricky about it if you read the instructions. Some were complain about the days not changing or working but I just tricked the watch into thinking a day or days had past by winding it through a 24 hour period. Have had no problem since. Now it doesn't tell you if it's night or day but you should be able tell that by looking out the window. Good watch for the money spent.