CLUE 4 UPDATE
The date of the emails may refer to UNIX timestamps. Although the dates on the emails are missing the seconds.
A) A smooth, knowledgeable operator:
https://wikileaks.org/plusd/cables/1973SAOPA02319_b.html
Date: 1973 October 11, 13:30
197310111330
UNIX timecode: 119194200
Is equivalent to:
10/11/1973 @ 1:30pm (UTC)
1973-10-11T13:30:00+00:00 in ISO 8601
Thu, 11 Oct 1973 13:30:00 +0000 in RFC 822, 1036, 1123, 2822
Thursday, 11-Oct-73 13:30:00 UTC in RFC 2822
1973-10-11T13:30:00+00:00 in RFC 3339
B) Congen has located two firms interested,:
https://wikileaks.org/plusd/cables/1974SAOPA01744_b.html
Date: 1974 August 7, 20:05
1974082005
UNIX timecode: 145137900
Is equivalent to:
08/07/1974 @ 8:05pm (UTC)
1974-08-07T20:05:00+00:00 in ISO 8601
Wed, 07 Aug 1974 20:05:00 +0000 in RFC 822, 1036, 1123, 2822
Wednesday, 07-Aug-74 20:05:00 UTC in RFC 2822
1974-08-07T20:05:00+00:00 in RFC 3339
C) Their fingers burned before
https://wikileaks.org/plusd/cables/1973USUNN04697_b.html
Date: 1973 November 13, 11:06
197311131106
UNIX timecode: 122036760
Is equivalent to:
11/13/1973 @ 11:06am (UTC)
1973-11-13T11:06:00+00:00 in ISO 8601
Tue, 13 Nov 1973 11:06:00 +0000 in RFC 822, 1036, 1123, 2822
Tuesday, 13-Nov-73 11:06:00 UTC in RFC 2822
1973-11-13T11:06:00+00:00 in RFC 3339
D) Spokesman declined to speculate on possibility of agreement
https://wikileaks.org/plusd/cables/1979BRASIL04604_e.html
Date: 1979 May 24, 00:00
197905240000
UNIX timecode: 296352000
Is equivalent to:
05/24/1979 @ 12:00am (UTC)
1979-05-24T00:00:00+00:00 in ISO 8601
Thu, 24 May 1979 00:00:00 +0000 in RFC 822, 1036, 1123, 2822
Thursday, 24-May-79 00:00:00 UTC in RFC 2822
1979-05-24T00:00:00+00:00 in RFC 3339
UNIX TIMESTAMPS