... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . This year's annual display of the Leonid meteor shower occurs from 10th to 21st November, with the broad peak of activity occurring during the night of Tuesday 17th and Wednesday 18th. According to theoretical predictions by David Asher of the Armagh Observatory, and colleagues, there may be up to 100 meteors per hour seen under ideal conditions during the late evening of the 17th and early morning of the 18th November. ...

In addition to the four old program units: PROGRAM (that is the main program), SUBROUTINE, FUNCTION and BLOCK DATA , the new concept MODULE has been added, as well as some new things in the old units. ... POSITIVE NUMBERS ASSUMED TYPE(INTERVAL), INTENT(IN) :: A, B TYPE (INTERVAL) :: INTERVAL_MULTIPLICATION INTERVAL_MULTIPLICATION%LOWER = A%LOWER * B%LOWER INTERVAL_MULTIPLICATION%UPPER = A%UPPER * B%UPPER END FUNCTION INTERVAL_MULTIPLICATION FUNCTION INTERVAL_DIVISION(A, B) ! ...