7_pm_ist_mdt

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12:00:00pm Mountain Daylight Time

12:00:00pm Mountain Daylight Time (the American timezone UTC -6)

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How do we know?

When it's the time 7:00pm in Irish Summer Time (the European timezone UTC+1) what time is it in Mountain Daylight Time (the American timezone UTC -6)?

Facts
Show facts

Show reasoning
Reasoning

I followed this chain of reasoning:

By calculation (generator: ["first_parameter@trueknowledge.com"]) I know that:

7:00pm is the first parameter of 7:00pm Irish Summer Time

7:00pm is the first parameter of 7:00pm Irish Summer Time

By calculation (generator: ["second_parameter@trueknowledge.com"]) I know that:

Irish Summer Time is the second parameter of 7:00pm Irish Summer Time

Irish Summer Time is the second parameter of 7:00pm Irish Summer Time

By calculation (generator: ["strictequal1@trueknowledge.com"]) I know that:

7:00pm Mountain Daylight Time is strictly equal to 7:00pm Mountain Daylight Time

7:00pm Mountain Daylight Time is strictly equal to 7:00pm Mountain Daylight Time

By calculation (generator: ["now@trueknowledge.com"]) I know that:

The current time is September 1st 2014, 18:40:52

The current time is September 1st 2014, 18:40:52

I know from locally stored knowledge that:

Fact 1: +1 hour is the time zone differential of Irish Summer Time ([fact: ["20030746@trueknowledge.com"]])

Fact 1: +1 hour is the time zone differential of Irish Summer Time ([fact: ["20030746@trueknowledge.com"]])

Fact 1
is true for
August 20th 2010, 15:32:48 onwards
([fact: ["933757974@trueknowledge.com"]])

By calculation (generator: ["timeperiodtopoint@trueknowledge.com"]) I know that:

Fact 1 is true at September 1st 2014, 18:40:52

Fact 1 is true at September 1st 2014, 18:40:52

By calculation (generator: ["first_parameter@trueknowledge.com"]) I know that:

1 hour and 0 minutes is the first parameter of +1 hour

1 hour and 0 minutes is the first parameter of +1 hour

I know from locally stored knowledge that:

Fact 2: -6 hours is the time zone differential of Mountain Daylight Time ([fact: ["20030747@trueknowledge.com"]])

Fact 2: -6 hours is the time zone differential of Mountain Daylight Time ([fact: ["20030747@trueknowledge.com"]])

Fact 2
is true for
August 20th 2010, 15:32:50 onwards
([fact: ["933758458@trueknowledge.com"]])

By calculation (generator: ["timeperiodtopoint@trueknowledge.com"]) I know that:

Fact 2 is true at September 1st 2014, 18:40:52

Fact 2 is true at September 1st 2014, 18:40:52

By calculation (generator: ["first_parameter@trueknowledge.com"]) I know that:

-6 hours and 0 minutes is the first parameter of -6 hours

-6 hours and 0 minutes is the first parameter of -6 hours

By calculation (generator: ["strictequal1@trueknowledge.com"]) I know that:

January 1st 1, 01:01:01 is strictly equal to January 1st 1, 01:01:01

January 1st 1, 01:01:01 is strictly equal to January 1st 1, 01:01:01

1 hour and 0 minutes
is strictly equal to
1 hour and 0 minutes

-6 hours and 0 minutes
is strictly equal to
-6 hours and 0 minutes

By calculation (generator: ["timepoint_sum@trueknowledge.com"]) I know that:

January 1st 1, 02:01:01 is the timepoint sum of January 1st 1, 01:01:01 and 1 hour and 0 minutes

January 1st 1, 02:01:01 is the timepoint sum of January 1st 1, 01:01:01 and 1 hour and 0 minutes

December 31st 0 BC, 19:01:01
is the timepoint sum of
January 1st 1, 01:01:01 and -6 hours and 0 minutes

By calculation (generator: ["timepoint_difference@trueknowledge.com"]) I know that:

7 hours, 0 minutes and 0 seconds is the length of time between the timepoints December 31st 0 BC, 19:01:01 and January 1st 1, 02:01:01

7 hours, 0 minutes and 0 seconds is the length of time between the timepoints December 31st 0 BC, 19:01:01 and January 1st 1, 02:01:01

By calculation (generator: ["difference_between_lengths_of_time@trueknowledge.com"]) I know that:

7 hours, 0 minutes and 0 seconds is the difference between the scalar quantities 1 hour and 0 minutes and -6 hours and 0 minutes

7 hours, 0 minutes and 0 seconds is the difference between the scalar quantities 1 hour and 0 minutes and -6 hours and 0 minutes

By calculation (generator: ["pinstance@trueknowledge.com"]) I know that:

Fact 3: 7 hours, 0 minutes and 0 seconds is a length of time

Fact 3: 7 hours, 0 minutes and 0 seconds is a length of time

Fact 3
is true for
all time

By calculation (generator: ["inverse_length_time@trueknowledge.com"]) I know that:

-7 hours, 0 minutes and 0 seconds is the inverse of 7 hours, 0 minutes and 0 seconds

-7 hours, 0 minutes and 0 seconds is the inverse of 7 hours, 0 minutes and 0 seconds

By calculation (generator: ["local_clock_time_sum@trueknowledge.com"]) I know that:

12:00:00pm Mountain Daylight Time is the sum of the local clock time and the length of time 7:00pm Mountain Daylight Time and -7 hours, 0 minutes and 0 seconds

12:00:00pm Mountain Daylight Time is the sum of the local clock time and the length of time 7:00pm Mountain Daylight Time and -7 hours, 0 minutes and 0 seconds

By calculation (generator: ["local_time_equivalent@trueknowledge.com"]) I know that:

7:00pm Irish Summer Time is equivalent to the local clock time 12:00:00pm Mountain Daylight Time

7:00pm Irish Summer Time is equivalent to the local clock time 12:00:00pm Mountain Daylight Time

Mountain Daylight Time
is the time zone specified in
12:00:00pm Mountain Daylight Time

I used the following facts to provide this answer:

+1 hour has been the time zone differential of Irish Summer Time since at least August 20th 2010, 15:32:48

-6 hours has been the time zone differential of Mountain Daylight Time since at least August 20th 2010, 15:32:50

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