F 14
The Au Tau Station is 27 miles by road from the Royal Observatory. Owing to time spent in travelling, necessary reconstruction of piers, difficulties with electric light, and alteration to the magnetic apparatus the requisite adjustments have only recently been completed. It is hoped to commence registration in February, 1928. Transport to Au Tau has been mainly furnished by the Railway Department during the year but this is not entirely satisfactory as a car cannot always be obtained at short notice.
VIII.-TIME SERVICE.
Time Ball.-The Time Ball on Kowloon Signal Hill is dropped at 10h. and 16h. daily, except on Saturdays when it is dropped at 10h. and 13h. and on Sundays and Holidays when it is dropped at 10h. only (120th Meridian Time).
The Ball is hoisted half mast at the 55th minute and full mast at the 57th minute. If the ball fails to drop at the correct time it is lowered at 5 minutes past the hour and the ordinary routine repeated at the following hour, if possible.
Time Signals are also given at night by means of three white lamps mounted vertically on the Observatory radio mast. The lights are extinguished momentarily every second from 20h. 55m. to 21h., except at the 28th, 54th, 55th, 56th, 57th, 58th and 59th seconds, of each minute. The 21h. signals were repeated at midnight on December 31st, the last signal indicating the close of the year 1927. The hours refer to Hong Kong Standard Time (8 hours East of Greenwich).
The Time Ball was dropped successfully 659 times. There was one failure, on May 17th at 10h, owing to an electrical defect; the ball was successfully dropped at 11h. however. The ball was not raised on August 20th and August 30th at 10h. or 16h, owing to high wind; also on August 23rd owing to electrical defects.
The error of the Time Ball due to the accumulated error of the standard clock during cloudy periods was 0s.8 on January 11th; 0s.6 on January 13th and 0s.4 on August 19th; it was 1s.6, 40s.4 and 1s.1, due to over correction of the mean time clock on July 4d. 10h, October 17d. 16h. and December 2d. 10h. respectively. On all other occasions the error was 0s.3 or less. The sign indicates that the Time Ball was late.
F 14
The Au Tau Station is 27 miles by road from the Royal Observatory. Owing
Owing to time spent in travelling, necessary reconstruction of piers, difficulties with electric light, and alteration to the magnetic apparatus the requisite adjustments have only recently been completed. It is hoped to commence registration in February, 1928. Transport to Au Tau has been mainly furnished by the Railway Department during the year but this is not entirely satisfactory as a car cannot always be obtained at short notice.
VIII.-TIME SERVICE.
Time Ball.-The Time Ball on Kowloon Signal Hill is dropped at 10h. and 16h. daily, except on Saturdays when it is dropped at 10h. and 13h. and on Sundays and Holidays when it is dropped at 10h. only (120th Meridian Time).
The Ball is hoisted half mast at the 55th minute and full mast at the 57th minute. If the ball fails to drop at the correct time it is lowered at 5 minutes past the hour and the ordinary routine repeated at the following hour, if possible.
Time Signals are also given at night by means of three white lamps mounted vertically on the Observatory radio mast. The lights are extinguished momentarily every second from 20h. 55m. to 21h., except at the 28th, 54th, 55th, 56th, 57th, 58th and 59th seconds, of each minute. The 21h. signals were repeated at midnight on December 31st, the last signal indicat- ing the close of the year 1927. The hours refer to Hong Kong Standard Time (8 hours East of Greenwich).
The Time Ball was dropped successfully 659 times. There was one failure, on May 17th at 10h, owing to an electrical defect; the ball was successfully dropped at 11h. however. The ball was not raised on August 20th and August 30th at 10h. or 16h, owing to high wind; also on August 23rd owing to electrical defects.
The error of the Time Ball due to the accumulated error of the standard clock during cloudy periods was0s.8 on January 11th.; Os.6 on January 13th. and Os.4 on August 19th; it was 1s.6, 40s.4 and 1s.1, due to over correction of the mean time clock on July 4d. 10h, October 17d. 16h. and December 2d. 10h. respectively. On all other occasions the
error was Os.3 or less. The sign indicates that the Time Ball was late.
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