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Happy New Year 2025

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Re: Happy New Year 2025

#36

Post by benatkin »

_kb wrote: post #30
benatkin wrote: post #17

The days are getting longer in the northern hemisphere and shorter in the southern hemisphere. And the start of the ISO 8601 dates is changing! I also monitor the changes of the hexadecimal unix timestamps. The next time the first of 8 hex digits changes is in 2029. from datetime import datetime '{:02X}'.format(int(datetime.now().timestamp())) datetime.fromtimestamp(0x70000000) And this spits out the year in Python:…

Even better, all of these are also 2025: (20+25)² (∑n)² and ∑n³ for n 1..9

Nice. A unique year indeed, since the last one was 1936, 89 years ago. It's obvious to me now - that's 2025-(45*2-1) and I can picture a row and a column at the edges of a grid being removed, wth one cell being shared between the row and column. I think maybe at some point I saw that. 1600 and 2500 are more obvious, and 2050 is the midpoint between them linearly.

The others in Python:

    sum(range(1, 10))**2
    sum(n**3 for n in range(1, 10))
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