# Explain why 1st of april is always on the same day of the week as 1st of july

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#1
Explain why 1st of april is always on the same day of the week as 1st of july
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#2
Explain why 1st of april is always on the same day of the week as 1st of july
This is a maths problem solving question , please could you give your reasoning?
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3 years ago
#3
Because there’s always 93 days between them... 93 days is exactly 13 weeks, so will always be on the same day.
1
3 years ago
#4
Well what's your answer? I'm assuming this is a question for homework, in which case you need to have attempted it first and then ask for help.
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3 years ago
#5
It's modular arithmetic bro.

4
3 years ago
#6
(Original post by math42)
It's modular arithmetic bro.

This is beautiful, I never expected University Challenge memes to be a thing
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3 years ago
#7
(Original post by -Mathematician-)
Because there’s always 93 days between them... 93 days is exactly 13 weeks, so will always be on the same day.
???!!!
2
3 years ago
#8
(Original post by tiny hobbit)
???!!!
I believe they mean 91.
0
3 years ago
#9
(Original post by math42)
I believe they mean 91.
No, they just live in a country that has adopted the once a quarter leap week which has an added weekend...
0
3 years ago
#10
modular arithmetic - genius post math42
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1 year ago
#11
April and July always begin in the same day of the week. This is true in both the Julian and Gregorian calendars. April is 30 days, May is 31 days, June is 30 days, so 1st July is 91 days after 1st April. This is exactly 13 weeks, so they always start on the same day
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1 year ago
#12
(Original post by Laboromniavincit)
Explain why 1st of april is always on the same day of the week as 1st of july
April and July always begin in the same day of the week. This is true in both the Julian and Gregorian calendars. April is 30 days, May is 31 days, June is 30 days, so 1st July is 91 days after 1st April. This is exactly 13 weeks, so they always start on the same day
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1 year ago
#13
(Original post by Laboromniavincit)
Explain why 1st of april is always on the same day of the week as 1st of july
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1 year ago
#14
This isn’t true anymore since Brexit.
0
11 months ago
#15
13 weeks is 91 days! Not 93.
0
11 months ago
#16
Same with September and December. And it is 91 days.
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