The TDT (Time and Date Table) contains only the current UTC time and date. It can be used for the internal clock of the receiver to synchronize.
|TR 101 290|
Descriptors may not occur in the TDT
|Table ID||8||Indicates to which table this section belongs, in this case TDT (0x70)|
|section_syntax_indicator||1||Indicates whether a sub-table structure including CRC check is used.|
|Reserved for future use||1||always binary value '1'|
|Reserved||2||always binary value '11'|
|UTC time||40||This 40 bit field gives the current time and date in UTC and MJD. The first 16 bits represent the 16 bits MJD, then the 24-bit UTC as 6 digits in 4-bit BCD.|