Number of day in month (A/65B 6.1 and Annex A) Hour of the day (A/65B 6.1 and Annex A) Declares the parameters that go into the System Time Table (A/65B 6.1), except for the time itself, which is communicated through other means These descriptors go into the STT These descriptors go into the STT Current GPS UTC offset, as published by the International Earth Rotation Service (A/65B 6.1) Current daylight savings status (A/65B 6.1 and Annex A) If DST is to change within a month, day of change (A/65B 6.1 and Annex A) If DST is to change within a month, hour of change (A/65B 6.1 and Annex A)