Reply To: Shaos Zemanios

Well the Gemara does conclude that Moshe and Dovid knew exactly when chatzos was so apparently it was possible to “tell time” at night, unless Moshe and Dovid had some spiritual way of knowing. However, before reaching this conclusion the Gemara suggested that Moshe did not know when chatzos was but Dovid did because the wind would blow his harp at chatzos.