What does a yellow porch light mean? Yellow porch lights are bug lights. By bug light I mean they are not supposed to attract bugs as bad as regular light bulbs.
GPS Week Number Rollover. The GPS Week Number count began at approximately midnight on the evening of 05 January 1980 / morning of 06 January 1980. Since that time, the count has been incremented by 1 each week, and broadcast as part of the GPS message. The GPS Week Number field is modulo 1024. This means that at the completion of week 1023, the GPS week number rolled over to 0 on midnight GPS Time of the evening of 21 August 1999 / morning of 22 August 1999. Note that this corresponded to 23:59:47 UTC on 21 August 1999.
The following array formula counts the number of days of the week in one month. With any date of the month in question in cell B38 and the day of week (1 = Sunday, 2 = Monday, ..., 7 = Saturday) in C38. For example, you can calculate the number of Mondays in January-2011 (equals 5).he following formula will return the date of the next Nth day of week (Sunday = 1, Monday = 2, ..., 7 = Saturday) from the start date. The start date is specified in cell B53, the N in C53, and day of week in D53. For example, you can find the date of the 6th Monday following 14-January-2011 (equals 21-February-2011).