Time Limits for Reporting Social Security Earnings. There's a time limit for reporting Social Security earnings and getting credits towards future Social Security benefits. The time period is 3 years, 3 months, and 15 days following the end of the calendar year in which you earn the income.
At latitude 25N, latest sunrise occurs just before mid-January, and earliest sunset is around the end of November. And at 50N, the date of earliest sunset is approximately 13th December, while latest sunrise is experienced at the end of December.
Evening is between sunset and late (10 p.m. or midnight). Night is anywhere from sunset to sunrise (plus or minus 30 minutes). Morning begins at midnight, but dawn doesn't start until almost sunrise. Edit: It's been pointed out that sunset isn't necessarily the hard time for the start of the evening, rather that dusk (or twilight) could be the beginning.