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(4) To the General Post Office and the Railways Department, Wellington, by telegraph daily at 9 h., except on Sundays and Government holidays. (5) To ships, and to the general public at Wellington, by electric lights at the Observatory daily at 20 h. 30 m. (6) To the Auckland Harbour Board, by electric lights at Auckland, on Tuesdays and Fridays at 20 h. 30 m., except on Government holidays. (7) To the South Island Telegraph offices, by telegraph, on Tuesdays and Fridays at 15 h. 30 m. ; except on Government holidays. In transmitting radio time signals the call sign of the Observatory is ZMO, in accordance with the provisions of the Madrid Radio Communication Regulations, Article 14, paragraph 2. (b) Non-automatic time signals : — (1) The Observatory automatic time signals sent to the General Post Office are distributed by telegraphic hand signals to some 2,300 telegraph and telephone offices distributed all over New Zealand, at 9 h. daily. (2) Similar hand signals are also sent to all railway offices in New Zealand at 9h. daily by telegraph to 221 offices, and by telephone to 257 stations. Number of Time Signals sent out. —The following list gives the number of time signals sent from the Observatory during the year 1935 : — Number of Signals. Radio time signals through ZLW .. .. .. .. .. 462 Radio time signals to 2YA .. . . .. .. ~ ~ 989 Time signals by telegraph .. . . . . . . .. .. 417 Time signals by lights at Wellington . . .. .. .. .. 365 Time signals by lights at Auckland .. 105 Time signals by telephone .. . . .. .. .. . . 5 Total number of signals sent out in 1935 .. .. 2,343 The time signals by telephone were given to Government House, Post and Telegraph Department, and Defence Department. Accuracy of Radio Time Signals sent out. —The following table indicates the accuracy of the radio time signals sent out from the Observatory during 1935. These corrections apply to the signals sent out through stations ZLW, 2YA, and 3YA at 10 h. 30 m. N.Z.M.T., and through station ZLW at 20 h. 30 m. N.Z.M.T. :— Number of times correction did not exceed 0-25 second .. .. .. 441 Number of times correction between 0-26 and 0-50 second .. .. 20 Number of times correction between 0-51 and 1-00 second .. .. .. 1 Number of times correction exceeded 1-00 second . . .. .. .. 0 Total number of time signals sent out .. .. .. 462 Failures of Time Signals. —Time signals from the Observatory failed to be sent out on the following dates :— 1935. September, 4, 10, and 12 .. Signals were not broadcast from ZLW owing to faults at that station. November 21 .. .. One signal to 2YA failed. November 23 .. .. One signal from ZLW failed owing to a fault at that station. December 11 .. .. Three signals from ZLW failed owing to a fault at that station. There were many occasions when signals supplied by the Observatory,were not broadcast by 2YA, owing either to failures at 2YA or to special broadcasts being in progress. As 3YA rebroadcasts the signals from 2YA, a failure of 2YA results in a failure of 3YA. On November 11, at 11 h. (New Zealand summer time), the radio time signals between 11 h. and 11 h. 2 m. were suppressed for the observance of the Armistice Day two minutes' silence. Government Buildings Clock. —The Government Buildings clock has been kept under fairly close control. A record is obtained at the Observatory each day by direct circuit from the clock, and adjustments are made as required. The greatest errors of this clock were—Thirty-one seconds fast on October 9 and twenty-nine seconds slow on October 26. General Post Office Clock.— The General Post Office clock is checked by W/T daily, at 15 h., except on Saturdays, Sundays, and Government holidays. The greatest errors observed were six seconds fast on February 8 and five seconds slow on February 28.

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