Adding simple time shift function to pivot levels indicator

Someone please help add a simple shift function to this auto pivot indicator. As it is currently, the indicator plots pivot levels according to the timezone used by the broker. My broker uses EST time. So my pivot levels are different from the most commonly used levels, which are based on GMT time. It would be awesome and greatly appreciated if someone would be kind enough to add the shift function to get my levels to plot based on GMT time. In this case, I think the time shift would be +8 (EST+8 hours = GMT)?

Thank you so much in advance!