[time-nuts] A milestone approaches

[Bill Riches]

Hi Tom

I passed this along to two of my old time computer gurus - I am sure they will want to celebrate!!

73,

Bill, WA2DVU
Cape May

-----Original Message-----
From: time-nuts [mailto:time-nuts-bounces at febo.com] On Behalf Of Tom Van Baak
Sent: Wednesday, July 12, 2017 8:19 AM
To: Discussion of precise time and frequency measurement <time-nuts at febo.com>
Subject: Re: [time-nuts] A milestone approaches

Hi Bill,

> Got this from a friend whose MN license plate is UNIX.

Join the club! There's ~50 of us in the US: http://leapsecond.com/pages/unix/


> At that instant, billions of Linux and Unix computers and devices

Plus embedded devices, such as Arduino, where 31-bit time_t C libraries are also used...


> return time() == 1500000000.  It will not be until 2033 when that number reaches 2 Billion.

Thanks for the notice. Add these to your list:

1414213562 0x544b2fba Sat Oct 25 06:06:02 2014 GMT (sqrt 2)
1415926535 0x54655307 Fri Nov 14 00:55:35 2014 GMT (pi)
1420405752 0x54a9abf8 Sun Jan 04 21:09:12 2015 GMT (H-maser Hz)
1500000000 0x59682f00 Fri Jul 14 03:40:00 2017 GMT (1.5 billion)
1616161616 0x6054ab50 Fri Mar 19 13:46:56 2021 GMT (pretty in dec)
1616928864 0x60606060 Sun Mar 28 10:54:24 2021 GMT (pretty in hex)
1717171717 0x6659f605 Fri May 31 17:08:37 2024 GMT (dec looking like oct)
1886417008 0x70707070 Thu Oct 11 13:43:28 2029 GMT (pretty in hex)
1985229328 0x76543210 Sun Nov 28 04:35:28 2032 GMT (hex digit countdown)
2000000000 0x77359400 Wed May 18 04:33:20 2033 GMT (2 billion)
2004318071 0x77777777 Thu Jul 07 04:01:11 2033 GMT (pretty in hex)
2147483647 0x7fffffff Tue Jan 19 03:14:07 2038 GMT (end of time)
2147483648 0x80000000 Tue Jan 19 03:14:08 2038 GMT (you survived)

While we're at it, we have a rare T&F MJD event coming in 2023:

1968-05-24 00:00:00 UTC (DOY = 145, Fri) = JD 2440000.5 = MJD 40000.0
1995-10-10 00:00:00 UTC (DOY = 283, Tue) = JD 2450000.5 = MJD 50000.0
2023-02-25 00:00:00 UTC (DOY =  56, Sat) = JD 2460000.5 = MJD 60000.0

/tvb

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