Domenick
Well-Known Member
- Joined
- Feb 15, 2012
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While downloading the last digital data set (sectionals, TAFs, and supplements) from the FAA:
https://www.faa.gov/air_traffic/flight_info/aeronav/digital_products/
a question occurred to me.
Why 56 days?
It doesn't divide evenly into 365 or 366, so every year the release dates differ. Why not simply start on 01 January and have a 73 day cycle with 5 releases a year and go 74 days on leap years?
Yeah, yeah, I know 56 days is exactly 8 weeks. So what? Why not 10? Or 12? How much can a chart change? And who picked Thursdays?
Inquiring minds want to know.
https://www.faa.gov/air_traffic/flight_info/aeronav/digital_products/
a question occurred to me.
Why 56 days?
It doesn't divide evenly into 365 or 366, so every year the release dates differ. Why not simply start on 01 January and have a 73 day cycle with 5 releases a year and go 74 days on leap years?
Yeah, yeah, I know 56 days is exactly 8 weeks. So what? Why not 10? Or 12? How much can a chart change? And who picked Thursdays?
Inquiring minds want to know.
