Nothing
Forgot it was a fast today (bit disoriented with dates due to current travels). Was just in TK lounge in IST and a random non-religious looking Israeli guy stopped me at 6:02 asking if the fast started yet. Took me a second to realize what he was asking, checked online and found we had another few minutes to Chap Arain
ETA: craziest Hashgacha Protis part was, we were downstairs in the middle open area having drinks. Dude was upstairs and must've seen my Yarmulka and decided to come down (G-D sent an angel?). All I saw was someone walk down the stairs, come over to me, and walked right back up the other stairs after our minute long chat.