The phrase 'two days duration' is correct and usable in written English.
You can use it to describe an event or activity that lasts for two days. Example: The conference held at the conference center had a two days duration.
The C2 algorithm differs from C1 in the use of a guard band of two days duration between the baseline and the current day being evaluated.
(c) The host institution for a regional conference of at least two days' duration may apply for a grant-in-aid from the national Society to apply toward the honorarium for a keynote speaker.
As the storm loomed, the Global Business Travel Association offered statistics extrapolated from past disruptions and found that in a major hurricane of one to two days' duration on the East Coast, the total loss in business travel spending would be about $684 million, and 580,000 business trips would be disrupted.
He was referred to the ophthalmic team for redness of left eye of two days duration.
Recurrent fever periods of one to two days duration, were observed in five (NW) and four (ON) lambs, respectively.
To avoid information contamination, most of the data (data from beggars and vendors) were collected in two days duration.
Most changes that were evident were identified at Day 14, with very little apparent impact of storage of seven days duration.
A metabolic trial of six days duration was conducted after 90 days of growth trial.
During the one to four days' duration of the Sun Dance, usually held during the summer solstice, the participants abstain from food and drink.
ICU patients with systemic inflammatory response syndrome (SIRS) or sepsis of three to five days duration and patients with ICUAW were studied.
He complained of swelling and pain of three days duration with no history of trauma, an inability to bear weight, and the patient had an unremitting fever for two days.
