1:30pm_est_in_ireland

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6:30:00pm Greenwich Mean Time

6:30:00pm Greenwich Mean Time (the European timezone equal to UTC)

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How do we know?

When it is the time 1:30pm in Eastern Standard Time (the American time zone UTC -5) what time is it in the island of Ireland (both Eire and Northern Ireland considered as a single place)?

Facts
Show facts

Show reasoning
Reasoning

I followed this chain of reasoning:

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

The current time is July 31st 2014, 03:21:07

The current time is July 31st 2014, 03:21:07

I know from locally stored knowledge that:

Fact 1: Greenwich Mean Time is the time zone for Ireland ([fact: ["135226925@trueknowledge.com"]])

Fact 1: Greenwich Mean Time is the time zone for Ireland ([fact: ["135226925@trueknowledge.com"]])

Fact 1
is true for
August 29th 2008, 12:12 onwards
([fact: ["1033063366@trueknowledge.com"]])

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

Fact 1 is true at July 31st 2014, 03:21:07

Fact 1 is true at July 31st 2014, 03:21:07

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

1:30pm is the first parameter of 1:30pm Eastern Standard Time

1:30pm is the first parameter of 1:30pm Eastern Standard Time

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

Eastern Standard Time is the second parameter of 1:30pm Eastern Standard Time

Eastern Standard Time is the second parameter of 1:30pm Eastern Standard Time

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

1:30pm Greenwich Mean Time is strictly equal to 1:30pm Greenwich Mean Time

1:30pm Greenwich Mean Time is strictly equal to 1:30pm Greenwich Mean Time

I know from locally stored knowledge that:

Fact 2: -5 hours is the time zone differential of Eastern Standard Time ([fact: ["20030465@trueknowledge.com"]])

Fact 2: -5 hours is the time zone differential of Eastern Standard Time ([fact: ["20030465@trueknowledge.com"]])

Fact 2
is true for
August 20th 2010, 15:32:26 onwards
([fact: ["933751218@trueknowledge.com"]])

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

Fact 2 is true at July 31st 2014, 03:21:07

Fact 2 is true at July 31st 2014, 03:21:07

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

-5 hours and 0 minutes is the first parameter of -5 hours

-5 hours and 0 minutes is the first parameter of -5 hours

I know from locally stored knowledge that:

Fact 3: +0 hours is the time zone differential of Greenwich Mean Time ([fact: ["20030743@trueknowledge.com"]])

Fact 3: +0 hours is the time zone differential of Greenwich Mean Time ([fact: ["20030743@trueknowledge.com"]])

Fact 3
is true for
August 20th 2010, 15:32:46 onwards
([fact: ["933757702@trueknowledge.com"]])

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

Fact 3 is true at July 31st 2014, 03:21:07

Fact 3 is true at July 31st 2014, 03:21:07

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

0 minutes is the first parameter of +0 hours

0 minutes is the first parameter of +0 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

-5 hours and 0 minutes
is strictly equal to
-5 hours and 0 minutes

0 minutes
is strictly equal to
0 minutes

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

December 31st 0 BC, 20:01:01 is the timepoint sum of January 1st 1, 01:01:01 and -5 hours and 0 minutes

December 31st 0 BC, 20:01:01 is the timepoint sum of January 1st 1, 01:01:01 and -5 hours and 0 minutes

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

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

-5 hours, 0 minutes and 0 seconds is the length of time between the timepoints January 1st 1, 01:01:01 and December 31st 0 BC, 20:01:01

-5 hours, 0 minutes and 0 seconds is the length of time between the timepoints January 1st 1, 01:01:01 and December 31st 0 BC, 20:01:01

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

-5 hours, 0 minutes and 0 seconds is the difference between the scalar quantities -5 hours and 0 minutes and 0 minutes

-5 hours, 0 minutes and 0 seconds is the difference between the scalar quantities -5 hours and 0 minutes and 0 minutes

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

Fact 4: -5 hours, 0 minutes and 0 seconds is a length of time

Fact 4: -5 hours, 0 minutes and 0 seconds is a length of time

Fact 4
is true for
all time

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

5 hours, 0 minutes and 0 seconds is the inverse of -5 hours, 0 minutes and 0 seconds

5 hours, 0 minutes and 0 seconds is the inverse of -5 hours, 0 minutes and 0 seconds

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

6:30:00pm Greenwich Mean Time is the sum of the local clock time and the length of time 1:30pm Greenwich Mean Time and 5 hours, 0 minutes and 0 seconds

6:30:00pm Greenwich Mean Time is the sum of the local clock time and the length of time 1:30pm Greenwich Mean Time and 5 hours, 0 minutes and 0 seconds

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

1:30pm Eastern Standard Time is equivalent to the local clock time 6:30:00pm Greenwich Mean Time

1:30pm Eastern Standard Time is equivalent to the local clock time 6:30:00pm Greenwich Mean Time

Greenwich Mean Time
is the time zone specified in
6:30:00pm Greenwich Mean Time

I used the following facts to provide this answer:

Greenwich Mean Time has been the time zone for Ireland since at least August 29th 2008, 12:12

-5 hours has been the time zone differential of Eastern Standard Time since at least August 20th 2010, 15:32:26

+0 hours has been the time zone differential of Greenwich Mean Time since at least August 20th 2010, 15:32:46

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