Living in Two Timezones

I've come to New York already on Saturday. I flew in at 4pm eastern time and I managed to stay awake until 9pm. While I woke several times during the night, I managed to get a full night sleep, only waking up at 8am. I spent Sunday running around downtown Manhattan and visiting Jeff Koons' exhibition. In the evening I was working and I fell a sleep at 10pm. Yesterday I woke up at 6:30am and went to bad at 11pm. Today I woke up at 6am. It seems my jet lag is not actually subsiding but is sticking around as if my head would still be living on Slovenian time, while my body has already accustomed to New York time zone. When I woke up during the night and I kept wondering what's the time in Ljubljana.

I've come to New York this week to work with my American colleagues. But the amount of communication with my Slovenian colleagues has not decreased substantially. Each morning I have an hour long video call with the product team back in Ljubljana and I keep chatting with people back home throughout the day. It seems that circadian rhythm of people we interact with has also a big effect on our own sleep patterns. Especially communication by video seems to completely confuse our biological system as it is really strange to talk with people in the dark while there's still sun shining at your place.