Here's an example: I have packets read from an instrument which are timestamped in seconds since 1980-01-06 (GPS Epoch). To compute each packet's proper dateti

Here's an example: I have packets read from an instrument which are timestamped in seconds since 1980-01-06 (GPS Epoch). To compute each packet's proper datetime representation in TAI, I need add those seconds to 1980-01-06, and subtract the amount of leap seconds that occurred. The subtracting of leap seconds could be done automatically by a library. When a leap second is added, it will occur on the 61st second of the minute (second = :60). These times aren't supported by the datetime class.