The Court Calendar

Already the recipient of a House Judiciary Committee subpoena for tapes relating to his role in Watergate, President Nixon collected another last week.

The new subpoena, requested by Special Prosecutor Leon Jaworski and approved by Judge John Sirica, demanded tapes of 64 conversations between Nixon and his aides from June 20, 1972 through June 4, 1973. Jaworski has been vainly seeking the tapes in private negotiations with the White House since Jan. 9. He contends that he needs them for the trial of seven Nixon men indict ed hi the Watergate coverup: H.R. Haldeman, John Ehrlichman, John Mitch ell, Charles Colson, Robert Mardian, Gordon Strachan and Kenneth Parkin son. Their trial has been set for Sept. 9, though they have until May 1 to file motions for separate trials, not expected to be granted by Sirica.

Other court dates on the Watergate calendar so far:

May 13. California Lieutenant Governor Ed Reinecke, who is charged with three counts of perjury stemming from his 1972 Senate testimony on when he told John Mitchell about ITT's pledge of financial aid to the Republican National Convention, must file any pretrial motions by this date. If they are rejected, the trial will start immediately.

May 15. Dwight Chapin, Nixon's former appointments secretary, is scheduled to be sentenced in the U.S. District Court on his two-count perjury conviction. Jeb Stuart Magruder, former Nixon re-election committee deputy di rector, has asked to be sentenced about this time. He pleaded guilty to conspiracy in the cover-up last August.

May 20. Ehrlichman, former domestic affairs adviser to Nixon, is scheduled to stand trial in California on a per jury charge. He was indicted last July for denying to a grand jury that he had any prior knowledge of the burglary of Daniel Ellsberg's psychiatrist's office.

June 1 7. On the second anniversary of the Watergate breakin, Ehrlichman, Colson and White House Plumbers G. Gordon Liddy, Bernard Barker, Eugenio Martinez and Felipe DeDiego are due to go on trial for conspiracy in the Ellsberg burglary.

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