Send exactly items (such as travel itenary, your calculation of number of full-day abroad, etc)following the evidence list in the 2005-11 recapture H1 time spent abroad memo.
"The burden of proof remains with the H-1B petitioner and/or the H-1B beneficiary to submit evidence documenting any and all exact periods of physical presence outside the United States when seeking an extension of petition validity and extension of stay as an H-1B nonimmigrant. The petitioner and/or beneficiary are clearly in the best position to organize and submit evidence of the beneficiary’s departures from and reentry into the United States. While petitioners often submit a summary and/or charts of travel and the number or days spent out of the United States, which eases review of the accompanying documentation, petitioners are also required to submit independent documentary evidence establishing that the alien was outside of the United States during all the days, weeks, mon ths etc. that he or she seeks to recapture (e.g. photocopies of passport stamps and/or Form I-94 arrival-departure records). The fact that the burden may not be met for some claimed periods, or has been met for some claimed periods, has no bearing on the remaining claimed periods. Any periods of time for which the burden has been met may be added to the eligible period of admission upon approval of the application for extension of status. An alien may not be granted an extension of stay for periods of time that are not supported by independent documentary evidence"
"The burden of proof remains with the H-1B petitioner and/or the H-1B beneficiary to submit evidence documenting any and all exact periods of physical presence outside the United States when seeking an extension of petition validity and extension of stay as an H-1B nonimmigrant. The petitioner and/or beneficiary are clearly in the best position to organize and submit evidence of the beneficiary’s departures from and reentry into the United States. While petitioners often submit a summary and/or charts of travel and the number or days spent out of the United States, which eases review of the accompanying documentation, petitioners are also required to submit independent documentary evidence establishing that the alien was outside of the United States during all the days, weeks, mon ths etc. that he or she seeks to recapture (e.g. photocopies of passport stamps and/or Form I-94 arrival-departure records). The fact that the burden may not be met for some claimed periods, or has been met for some claimed periods, has no bearing on the remaining claimed periods. Any periods of time for which the burden has been met may be added to the eligible period of admission upon approval of the application for extension of status. An alien may not be granted an extension of stay for periods of time that are not supported by independent documentary evidence"