By calculation (generator: ["day_week@trueknowledge.com"]) I know that:
Monday
is the day of the week of
June 15th 1970
Tuesday
is the day of the week of
June 15th 1971
Thursday
is the day of the week of
June 15th 1972
Friday
is the day of the week of
June 15th 1973
Saturday
is the day of the week of
June 15th 1974
Sunday
is the day of the week of
June 15th 1975
Tuesday
is the day of the week of
June 15th 1976
Wednesday
is the day of the week of
June 15th 1977
Thursday
is the day of the week of
June 15th 1978
By calculation (generator: ["timepoint_when_day_happened_on@trueknowledge.com"]) I know that:
June 15th 1973
is a timepoint when the day happened on
Friday, the 15th of June and 1970s