code is most similar to that transmitted by WWVB, but each bit is reversed: on the second, the carrier is increased to full power. Some time during the second (depending on the bit to be transmitted), the carrier is reduced by 10 dB, to 10% power, until the beginning of the next second. There are three different signals that are sent each second: 0 bits consist of 0.8 s of full power, followed by 0.2 s of reduced power. 1 bits consist of 0.5 s of full power, followed by 0.5 s of reduced power. Marker bits consist of 0.2 s of full power, followed by 0.8 s of reduced power. As with WWVB, seconds 0, 9, 19, 29, 39, 49 and 59 of each minute are marker bits. The remaining 53 encode Japan Standard Time using binary-coded decimal. JST does not include summer time, but bits are reserved to handle it. Leap second warning bits are also provided, these announce leap seconds starting at the beginning of the UTC month (09:00 JST on the first day of the month), and ending with the leap second insertion (just after 08:59 JST on the first day of the following month). The full-time code is as follows: The first 35 seconds are identical to WWVB, but after that it diverges, including some parity and day-of-week bits not in WWVB, and omitting DUT1 information. P0 is always the last second of a minute. In the event of a leap second, an additional 0 bit is inserted before it, and the marker bit is transmitted during second 60. LS1 and LS2 are normally both 0. Both bits are set to announce an inserted leap second at the end of the current UTC month. Twice per hour (minutes 15 and 45), the last 20 seconds of the time code are different. In lieu of the year bits, the station's call sign is broadcast in Morse code twice using on-off keying during seconds 40 through 48. Further, bits 50 through 55 are replaced by 6 status bits ST1 through ST6 which, if non-zero, indicate a scheduled service interruption: ST1 through ST3 indicate the time of the planned service interruption: ST4, if set, promises the service interruption will be during daylight hours only. If unset, the interruption may be all day. ST5 and ST6 indicate the duration of the interruption: If no interruption is planned, all ST