Re: Happy Asteriod Day

From: Ken Mulholland <Ken@timepatternspbm.demon.co.uk>

Date: Thu, 04 Nov 1999 00:00:00 +0000

Days of the week

As you may know there are 365 days in a year except for leap years when
the is an extra day (29th February). This means that each year the day
of the week for a given date moves forward 1 day except for leap years
at and beyond 1st of March when the move forward is two days. In
January and February in the year following a leap year the day of the
week also moves forward 2 days.

There are exceptions. Every year that divides by 100 is not a leap year
unless the date also divides evenly by 400. Thus 2000 will
exceptionally be a leap year. A further exception to this rule is the
year 3600 which will (very exceptionally) not be a leap year.

Going backwards it is necessary to remember that in 1752 the eleven
days (3rd September to 13th September) where ommited in order to
harmonize the Gregorian and Julian Calanders (yet another example of
the UK giving into Europe).

So lets do it the hard way:

1999 26th October was a Tuesday
2000 26th October will be a Thursday (Leap year)
2001 Friday
2002 Saturday
2003 Sunday
2004 Tuesday (Leap year)
2005 Wednesday
2006 Thursday
2007 Friday
2008 Sunday (Leap year)
2009 Monday
2010 Tuesday
2011 Wednesday
2012 Friday (Leap year)
2013 Saturday
2014 Sunday
2015 Monday
2016 Wednesday (Leap year)
2017 Thursday
2018 Friday
2019 Saturday
2020 Monday (Leap year)
2021 Tuesday
2022 Wednesday
2023 Thursday
2024 Saturday (Leap year)
2025 Sunday
2026 Monday
2027 Tuesday
2028 Thursday (Leap year)

QED

What I wonder is what made you think it was a Friday?

Perhaps:
a) You goofed in your calculation
b) You were trying to wind me up (success!)
c) You were using an Apple MacIntosh.

Regards Ken.

References

Re: PBM Conventions
Ken Mulholland <Ken@timepatternspbm.demon.co.uk>
Tue, 26 Oct 1999 00:00:00 +0000
Happy Asteriod Day
lordsofthedeep@aol.com (LordsOfTheDeep)
Wed, 03 Nov 1999 00:00:00 +0000

Referenced By

Re: PBM Conventions
Ken Mulholland <Ken@timepatternspbm.demon.co.uk>
Tue, 26 Oct 1999 00:00:00 +0000
Happy Asteriod Day
lordsofthedeep@aol.com (LordsOfTheDeep)
Wed, 03 Nov 1999 00:00:00 +0000