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The GPS week number rollover is a phenomenon that happens every 1,024 weeks, which is about 19.6 years. The Global Positioning System (GPS) broadcasts a date, including a week number counter that is stored in only ten binary digits , whose range is therefore 0–1,023.
GPS dates are expressed as a week number and a day-of-week number, with the week number initially using a ten-bit value and modernised GPS navigation messages using a 13-bit field. Ten-bit systems would roll over every 1024 weeks (about 19.6 years) after Sunday 6 January 1980 (the GPS epoch), and 13-bit systems roll over every 8192 weeks ...
Time formatting and storage bugs lists other similar problems, often caused by rollover similar to the cause of this year 2038 problem. A GPS week number rollover will coincidentally happen later in 2038, for a different reason than this year 2038 problem.
GPS time is expressed with a resolution of 1.5 seconds as a week number and a time of week count (TOW). [13] Its zero point (week 0, TOW 0) is defined to be 1980-01-06T00:00Z. The TOW count is a value ranging from 0 to 403,199 whose meaning is the number of 1.5 second periods elapsed since the beginning of the GPS week.
The 60-day rollover rule is one of the many traps that lie in wait for investors rolling over a retirement account such as a 401(k) or IRA. You have to follow the rules exactly, or you could end ...
Qualcomm BREW, GPS, ATSC 32-bit time stamps: GPS counts weeks (a week is defined to start on Sunday) and 6 January is the first Sunday of 1980. [35] [36] Weeks are stored in a 10-bit integer, and the first GPS week number rollover occurred in August 1999. 31 December 1989: Garmin FIT Epoch. [37]
The time limit on rollovers You can roll over a 401(k) employer-sponsored retirement plan to an IRA or otherwise transfer an IRA, and you typically have 60 days to get it from one account to another.
Roll over your old 401(k) to your new employer’s 401(k) If your new employer’s 401(k) plan accepts rollovers, this may be a good option if the investment options are better or lower-cost than ...