https://travel.state.gov/content/travel/en/legal/visa-law0/visa-bulletin.html
2019.10 — 2015.1.1
2019.11 — 2015.3.15
2019.12 — 2015.6.22 (预计:2015.5.15)
2020.1 — 2015.7.1 (预计:2015.7.15)
2020.2 — 2015.7.15 (预计:2015.9.15)
2020.3 — 2015.8.15 (预计:2015.11.15)
2020.4 — 2015.9.1
2020.5 — 2015.10.1
2020.6 — 2015.11.1
我的排期:2015.10.18