/// The value indicates the number of seconds since January 1, 1970, 00:00 UTC, by using a fixed point format.
/// The value indicates the number of seconds since January 1, 1970, 00:00 UTC, by using a fixed point format.
/// In this format, the integer number of seconds is contained in the first 48 bits of the field, and the remaining 16 bits indicate the number of 1/65536 fractions of a second.
/// In this format, the integer number of seconds is contained in the first 48 bits of the field, and the remaining 16 bits indicate the number of 1/65536 fractions of a second.