January 20th will be 21 days from the last day of 2018 , counting inclusive. Daniel 10 v. 13-14 indicates that there was a 21 day delay for Daniel as "he remained with the kings of Persia..."  and this 21 day delay seems to be connected to the  "latter days...for the vision is for many days." v. 14

The Great Sign of Revelation 12 has only occurred one time in 7,000 years , on September 23, 2017. Scripture seems to connect it to the Lord's coming. It is extremely detailed and specific. Just because the date has passed , it should not be ignored. Signs point to things ahead.