1920 hours is 7:20 PM. Whether that's night or day depends on where you are and what time of year it is.
I'm assuming you didn't mean the year 1920, which, like all years, had both nights and days.
knight, night
3 hour at night (vishnu sharma)
A storm on the night of 4th/5th June delayed Operation Overlord by one day.
D Day officially started at 00.16 when British glider troops landed at Caen. It officially ended at mid-night on June 6, 1944, that same day. Operation Overlord continued as D Day was only the first day.
night to avoid machine guns and mortar
The cast of A Night Out and a Day In - 1920 includes: Eric Blore Lupino Lane Joe Monkhouse Challis Sanderson Dmitri Vetter
Her Night Out - 1920 was released on: USA: 6 September 1920
The Night Rider - 1920 was released on: USA: May 1920
His Naughty Night - 1920 was released on: USA: September 1920
Andy's Night Out - 1920 was released on: USA: 3 July 1920
A Wild Night - 1920 was released on: USA: 11 October 1920
The Transatlantic Night Express - 1920 was released on: USA: 27 June 1920
The cast of Her Night Out - 1920 includes: Bartine Burkett
The Night Riders - 1920 was released on: UK: July 1920 USA: 1 July 1922
Night cartsThe "night cart" man collected human waste from houses every day in the 1920's in NZ.
The cast of The Night Raider - 1920 includes: Texas Guinan
The cast of The Night of the Dub - 1920 includes: Ernest Truex