Interesting point. I note the initial draw down occurred on 20-01-2017 which as you say would make the earliest conversion date 21-07-18.
"As at 31 December 2016, Byron had not drawn down any amounts under the Metgasco Facility. However, the full $A8 million was drawn down on 20th January 2017"
Terms of the conversion state
"Conversion: convertible at Metgasco’s election after eighteen months from initial drawdown with one week’s notice at a 10% discount to the then prevailing 30 day volume weighted average price (“VWAP”) of Byron"
BYE Price at posting:
25.0¢ Sentiment: None Disclosure: Not Held