question: public static byte [ ] calendarToRawBytes ( Calendar timestamp , boolean honorDeviceTimeOffset ) { if ( honorDeviceTimeOffset ) { int offsetInHours = MiBandCoordinator . getDeviceTimeOffsetHours ( ) ; if ( offsetInHours != 0 ) { timestamp . add ( Calendar . HOUR_OF_DAY , offsetInHours ) ; } } byte [ ] year = fromUint16 ( timestamp . get ( Calendar . YEAR ) ) ; return new byte [ ] { year [ 0 ] , year [ 1 ] , fromUint8 ( timestamp . get ( Calendar . MONTH ) + 1 ) , fromUint8 ( timestamp . get ( Calendar . DATE ) ) , fromUint8 ( timestamp . get ( Calendar . HOUR_OF_DAY ) ) , fromUint8 ( timestamp . get ( Calendar . MINUTE ) ) , fromUint8 ( timestamp . get ( Calendar . SECOND ) ) , dayOfWeekToRawBytes ( timestamp ) , 0 } ; }
target:  Converts a timestamp to the byte sequence to be sent to the current time characteristic